diff --git a/src/Augmentation/AugmentationHelpers.tsx b/src/Augmentation/AugmentationHelpers.tsx
index 5da4d7228..44c0f64ba 100644
--- a/src/Augmentation/AugmentationHelpers.tsx
+++ b/src/Augmentation/AugmentationHelpers.tsx
@@ -8,7 +8,6 @@ import { CONSTANTS } from "../Constants";
 import { Factions, factionExists } from "../Faction/Factions";
 import { Player } from "../Player";
 import { prestigeAugmentation } from "../Prestige";
-import { SourceFileFlags } from "../SourceFile/SourceFileFlags";
 
 import { dialogBoxCreate } from "../ui/React/DialogBox";
 import { clearObject } from "../utils/helpers/clearObject";
@@ -73,7 +72,7 @@ function initAugmentations(): void {
 }
 
 function getBaseAugmentationPriceMultiplier(): number {
-  return CONSTANTS.MultipleAugMultiplier * [1, 0.96, 0.94, 0.93][SourceFileFlags[11]];
+  return CONSTANTS.MultipleAugMultiplier * [1, 0.96, 0.94, 0.93][Player.sourceFileLvl(11)];
 }
 export function getGenericAugmentationPriceMultiplier(): number {
   return Math.pow(getBaseAugmentationPriceMultiplier(), Player.queuedAugmentations.length);
diff --git a/src/Augmentation/ui/PlayerMultipliers.tsx b/src/Augmentation/ui/PlayerMultipliers.tsx
index b5ec5edd7..c8cadc341 100644
--- a/src/Augmentation/ui/PlayerMultipliers.tsx
+++ b/src/Augmentation/ui/PlayerMultipliers.tsx
@@ -7,7 +7,6 @@ import * as React from "react";
 import { BitNodeMultipliers } from "../../BitNode/BitNodeMultipliers";
 import { Player } from "../../Player";
 import { Settings } from "../../Settings/Settings";
-import { SourceFileFlags } from "../../SourceFile/SourceFileFlags";
 import { numeralWrapper } from "../../ui/numeralFormat";
 import { Augmentations } from "../Augmentations";
 
@@ -35,7 +34,7 @@ interface IBitNodeModifiedStatsProps {
 
 function BitNodeModifiedStats(props: IBitNodeModifiedStatsProps): React.ReactElement {
   // If player doesn't have SF5 or if the property isn't affected by BitNode mults
-  if (props.mult === 1 || SourceFileFlags[5] === 0)
+  if (props.mult === 1 || Player.sourceFileLvl(5) === 0)
     return <Typography color={props.color}>{numeralWrapper.formatPercentage(props.base)}</Typography>;
 
   return (
diff --git a/src/BitNode/ui/BitverseRoot.tsx b/src/BitNode/ui/BitverseRoot.tsx
index 8894593e6..1b4c2558a 100644
--- a/src/BitNode/ui/BitverseRoot.tsx
+++ b/src/BitNode/ui/BitverseRoot.tsx
@@ -1,5 +1,4 @@
 import React, { useState } from "react";
-import { SourceFileFlags } from "../../SourceFile/SourceFileFlags";
 import { IRouter } from "../../ui/Router";
 import { BitNodes } from "../BitNode";
 import { enterBitNode } from "../../RedPill";
@@ -128,12 +127,6 @@ export function BitverseRoot(props: IProps): React.ReactElement {
   const destroyed = player.bitNodeN;
   const [destroySequence, setDestroySequence] = useState(!props.quick);
 
-  // Update NextSourceFileFlags
-  const nextSourceFileFlags = SourceFileFlags.slice();
-  if (!props.flume) {
-    if (nextSourceFileFlags[destroyed] < 3) ++nextSourceFileFlags[destroyed];
-  }
-
   if (destroySequence) {
     return (
       <CinematicText
@@ -164,6 +157,15 @@ export function BitverseRoot(props: IProps): React.ReactElement {
     );
   }
 
+  const nextSourceFileLvl = (n: number): number => {
+    const lvl = player.sourceFileLvl(n);
+    if (n !== destroyed) {
+      return lvl;
+    }
+    const max = n === 12 ? Infinity : 3;
+    return Math.min(max, lvl + 1);
+  };
+
   if (Settings.DisableASCIIArt) {
     return (
       <>
@@ -177,7 +179,7 @@ export function BitverseRoot(props: IProps): React.ReactElement {
               <BitNodePortal
                 key={node.number}
                 n={node.number}
-                level={nextSourceFileFlags[node.number]}
+                level={nextSourceFileLvl(node.number)}
                 enter={enter}
                 flume={props.flume}
                 destroyedBitNode={destroyed}
@@ -216,6 +218,8 @@ export function BitverseRoot(props: IProps): React.ReactElement {
       </>
     );
   }
+
+  const n = nextSourceFileLvl;
   return (
     // prettier-ignore
     <>
@@ -229,19 +233,19 @@ export function BitverseRoot(props: IProps): React.ReactElement {
       <Typography sx={{lineHeight: '1em',whiteSpace: 'pre'}}>O | | |  \|  |  O  /   _/ |    /    O  |  |/  | | | O</Typography>
       <Typography sx={{lineHeight: '1em',whiteSpace: 'pre'}}>| | | |O  /  |  | O   /   |   O   O |  |  \  O| | | |</Typography>
       <Typography sx={{lineHeight: '1em',whiteSpace: 'pre'}}>| | |/  \/  / __| | |/ \  |   \   | |__ \  \/  \| | |</Typography>
-      <Typography sx={{lineHeight: '1em',whiteSpace: 'pre'}}> \| O   |  |_/    |\|   \ <BitNodePortal n={13} level={nextSourceFileFlags[13]} enter={enter} flume={props.flume} destroyedBitNode={destroyed} />    \__|    \_|  |   O |/ </Typography>
+      <Typography sx={{lineHeight: '1em',whiteSpace: 'pre'}}> \| O   |  |_/    |\|   \ <BitNodePortal n={13} level={n(13)} enter={enter} flume={props.flume} destroyedBitNode={destroyed} />    \__|    \_|  |   O |/ </Typography>
       <Typography sx={{lineHeight: '1em',whiteSpace: 'pre'}}>  | |   |_/       | |    \|    /  |       \_|   | |  </Typography>
       <Typography sx={{lineHeight: '1em',whiteSpace: 'pre'}}>   \|   /          \|     |   /  /          \   |/   </Typography>
-      <Typography sx={{lineHeight: '1em',whiteSpace: 'pre'}}>    |  <BitNodePortal n={10} level={nextSourceFileFlags[10]} enter={enter} flume={props.flume} destroyedBitNode={destroyed} />            |     |  /  |            <BitNodePortal n={11} level={nextSourceFileFlags[11]} enter={enter} flume={props.flume} destroyedBitNode={destroyed} />  |    </Typography>
-      <Typography sx={{lineHeight: '1em',whiteSpace: 'pre'}}>  <BitNodePortal n={9} level={nextSourceFileFlags[9]} enter={enter} flume={props.flume} destroyedBitNode={destroyed} /> |  |            |     |     |            |  | <BitNodePortal n={12} level={nextSourceFileFlags[12]} enter={enter} flume={props.flume} destroyedBitNode={destroyed} />  </Typography>
+      <Typography sx={{lineHeight: '1em',whiteSpace: 'pre'}}>    |  <BitNodePortal n={10} level={n(10)} enter={enter} flume={props.flume} destroyedBitNode={destroyed} />            |     |  /  |            <BitNodePortal n={11} level={n(11)} enter={enter} flume={props.flume} destroyedBitNode={destroyed} />  |    </Typography>
+      <Typography sx={{lineHeight: '1em',whiteSpace: 'pre'}}>  <BitNodePortal n={9} level={n(9)} enter={enter} flume={props.flume} destroyedBitNode={destroyed} /> |  |            |     |     |            |  | <BitNodePortal n={12} level={n(12)} enter={enter} flume={props.flume} destroyedBitNode={destroyed} />  </Typography>
       <Typography sx={{lineHeight: '1em',whiteSpace: 'pre'}}>  | |  |            /    / \    \            |  | |  </Typography>
-      <Typography sx={{lineHeight: '1em',whiteSpace: 'pre'}}>   \|  |           /  <BitNodePortal n={7} level={nextSourceFileFlags[7]} enter={enter} flume={props.flume} destroyedBitNode={destroyed} /> /   \ <BitNodePortal n={8} level={nextSourceFileFlags[8]} enter={enter} flume={props.flume} destroyedBitNode={destroyed} />  \           |  |/   </Typography>
+      <Typography sx={{lineHeight: '1em',whiteSpace: 'pre'}}>   \|  |           /  <BitNodePortal n={7} level={n(7)} enter={enter} flume={props.flume} destroyedBitNode={destroyed} /> /   \ <BitNodePortal n={8} level={n(8)} enter={enter} flume={props.flume} destroyedBitNode={destroyed} />  \           |  |/   </Typography>
       <Typography sx={{lineHeight: '1em',whiteSpace: 'pre'}}>    \  |          /  / |     | \  \          |  /    </Typography>
-      <Typography sx={{lineHeight: '1em',whiteSpace: 'pre'}}>     \ \JUMP <BitNodePortal n={5} level={nextSourceFileFlags[5]} enter={enter} flume={props.flume} destroyedBitNode={destroyed} />3R |  |  |     |  |  | R3<BitNodePortal n={6} level={nextSourceFileFlags[6]} enter={enter} flume={props.flume} destroyedBitNode={destroyed} /> PMUJ/ /     </Typography>
+      <Typography sx={{lineHeight: '1em',whiteSpace: 'pre'}}>     \ \JUMP <BitNodePortal n={5} level={n(5)} enter={enter} flume={props.flume} destroyedBitNode={destroyed} />3R |  |  |     |  |  | R3<BitNodePortal n={6} level={n(6)} enter={enter} flume={props.flume} destroyedBitNode={destroyed} /> PMUJ/ /     </Typography>
       <Typography sx={{lineHeight: '1em',whiteSpace: 'pre'}}>      \||    |   |  |  |     |  |  |   |    ||/      </Typography>
       <Typography sx={{lineHeight: '1em',whiteSpace: 'pre'}}>       \|     \_ |  |  |     |  |  | _/     |/       </Typography>
       <Typography sx={{lineHeight: '1em',whiteSpace: 'pre'}}>        \       \| /    \   /    \ |/       /        </Typography>
-      <Typography sx={{lineHeight: '1em',whiteSpace: 'pre'}}>         <BitNodePortal n={1} level={nextSourceFileFlags[1]} enter={enter} flume={props.flume} destroyedBitNode={destroyed} />       |/   <BitNodePortal n={2} level={nextSourceFileFlags[2]} enter={enter} flume={props.flume} destroyedBitNode={destroyed} />  | |  <BitNodePortal n={3} level={nextSourceFileFlags[3]} enter={enter} flume={props.flume} destroyedBitNode={destroyed} />   \|       <BitNodePortal n={4} level={nextSourceFileFlags[4]} enter={enter} flume={props.flume} destroyedBitNode={destroyed} />         </Typography>
+      <Typography sx={{lineHeight: '1em',whiteSpace: 'pre'}}>         <BitNodePortal n={1} level={n(1)} enter={enter} flume={props.flume} destroyedBitNode={destroyed} />       |/   <BitNodePortal n={2} level={n(2)} enter={enter} flume={props.flume} destroyedBitNode={destroyed} />  | |  <BitNodePortal n={3} level={n(3)} enter={enter} flume={props.flume} destroyedBitNode={destroyed} />   \|       <BitNodePortal n={4} level={n(4)} enter={enter} flume={props.flume} destroyedBitNode={destroyed} />         </Typography>
       <Typography sx={{lineHeight: '1em',whiteSpace: 'pre'}}>         |       |    |  | |  |    |       |         </Typography>
       <Typography sx={{lineHeight: '1em',whiteSpace: 'pre'}}>          \JUMP3R|JUMP|3R| |R3|PMUJ|R3PMUJ/          </Typography>
       <br />
diff --git a/src/Faction/FactionHelpers.tsx b/src/Faction/FactionHelpers.tsx
index 729eb15be..27e5f2816 100644
--- a/src/Faction/FactionHelpers.tsx
+++ b/src/Faction/FactionHelpers.tsx
@@ -15,7 +15,6 @@ import {
   getFactionSecurityWorkRepGain,
   getFactionFieldWorkRepGain,
 } from "../PersonObjects/formulas/reputation";
-import { SourceFileFlags } from "../SourceFile/SourceFileFlags";
 
 import { dialogBoxCreate } from "../ui/React/DialogBox";
 import { InvitationEvent } from "./ui/InvitationModal";
@@ -120,13 +119,14 @@ export function purchaseAugmentation(aug: Augmentation, fac: Faction, sing = fal
       aug.baseCost = 750e3 * mult * BitNodeMultipliers.AugmentationMoneyCost;
 
       for (let i = 0; i < Player.queuedAugmentations.length - 1; ++i) {
-        aug.baseCost *= CONSTANTS.MultipleAugMultiplier * [1, 0.96, 0.94, 0.93][SourceFileFlags[11]];
+        aug.baseCost *= CONSTANTS.MultipleAugMultiplier * [1, 0.96, 0.94, 0.93][Player.sourceFileLvl(11)];
       }
     }
 
     for (const name of Object.keys(Augmentations)) {
       if (Augmentations.hasOwnProperty(name)) {
-        Augmentations[name].baseCost *= CONSTANTS.MultipleAugMultiplier * [1, 0.96, 0.94, 0.93][SourceFileFlags[11]];
+        Augmentations[name].baseCost *=
+          CONSTANTS.MultipleAugMultiplier * [1, 0.96, 0.94, 0.93][Player.sourceFileLvl(11)];
       }
     }
 
diff --git a/src/Hacknet/HacknetHelpers.tsx b/src/Hacknet/HacknetHelpers.tsx
index e8e9bab74..e17bdd289 100644
--- a/src/Hacknet/HacknetHelpers.tsx
+++ b/src/Hacknet/HacknetHelpers.tsx
@@ -21,12 +21,11 @@ import { iTutorialSteps, iTutorialNextStep, ITutorial } from "../InteractiveTuto
 import { IPlayer } from "../PersonObjects/IPlayer";
 import { GetServer } from "../Server/AllServers";
 import { Server } from "../Server/Server";
-import { SourceFileFlags } from "../SourceFile/SourceFileFlags";
 
 // Returns a boolean indicating whether the player has Hacknet Servers
 // (the upgraded form of Hacknet Nodes)
 export function hasHacknetServers(player: IPlayer): boolean {
-  return player.bitNodeN === 9 || SourceFileFlags[9] > 0;
+  return player.bitNodeN === 9 || player.sourceFileLvl(9) > 0;
 }
 
 export function purchaseHacknet(player: IPlayer): number {
diff --git a/src/NetscriptFunctions.ts b/src/NetscriptFunctions.ts
index c5bcf067f..e0e1da770 100644
--- a/src/NetscriptFunctions.ts
+++ b/src/NetscriptFunctions.ts
@@ -40,7 +40,6 @@ import {
 } from "./Server/ServerHelpers";
 import { getPurchaseServerCost, getPurchaseServerLimit, getPurchaseServerMaxRam } from "./Server/ServerPurchases";
 import { Server } from "./Server/Server";
-import { SourceFileFlags } from "./SourceFile/SourceFileFlags";
 import { influenceStockThroughServerHack, influenceStockThroughServerGrow } from "./StockMarket/PlayerInfluencing";
 
 import { isValidFilePath, removeLeadingSlash } from "./Terminal/DirectoryHelpers";
@@ -1548,7 +1547,7 @@ export function NetscriptFunctions(workerScript: WorkerScript): NS {
     },
     getBitNodeMultipliers: function (): IBNMults {
       updateDynamicRam("getBitNodeMultipliers", getRamCost(Player, "getBitNodeMultipliers"));
-      if (SourceFileFlags[5] <= 0 && Player.bitNodeN !== 5) {
+      if (Player.sourceFileLvl(5) <= 0 && Player.bitNodeN !== 5) {
         throw makeRuntimeErrorMsg("getBitNodeMultipliers", "Requires Source-File 5 to run.");
       }
       const copy = Object.assign({}, BitNodeMultipliers);
diff --git a/src/NetscriptFunctions/Sleeve.ts b/src/NetscriptFunctions/Sleeve.ts
index 6d383161e..6b7751001 100644
--- a/src/NetscriptFunctions/Sleeve.ts
+++ b/src/NetscriptFunctions/Sleeve.ts
@@ -2,7 +2,6 @@ import { INetscriptHelper } from "./INetscriptHelper";
 import { IPlayer } from "../PersonObjects/IPlayer";
 import { getRamCost } from "../Netscript/RamCostGenerator";
 import { FactionWorkType } from "../Faction/FactionWorkTypeEnum";
-import { SourceFileFlags } from "../SourceFile/SourceFileFlags";
 import { SleeveTaskType } from "../PersonObjects/Sleeve/SleeveTaskTypesEnum";
 import { WorkerScript } from "../Netscript/WorkerScript";
 import { findSleevePurchasableAugs } from "../PersonObjects/Sleeve/SleeveHelpers";
@@ -20,7 +19,7 @@ import {
 
 export function NetscriptSleeve(player: IPlayer, workerScript: WorkerScript, helper: INetscriptHelper): ISleeve {
   const checkSleeveAPIAccess = function (func: string): void {
-    if (player.bitNodeN !== 10 && !SourceFileFlags[10]) {
+    if (player.bitNodeN !== 10 && !player.sourceFileLvl(10)) {
       throw helper.makeRuntimeErrorMsg(
         `sleeve.${func}`,
         "You do not currently have access to the Sleeve API. This is either because you are not in BitNode-10 or because you do not have Source-File 10",
diff --git a/src/PersonObjects/Player/PlayerObjectBladeburnerMethods.ts b/src/PersonObjects/Player/PlayerObjectBladeburnerMethods.ts
index ba031464c..f601eae55 100644
--- a/src/PersonObjects/Player/PlayerObjectBladeburnerMethods.ts
+++ b/src/PersonObjects/Player/PlayerObjectBladeburnerMethods.ts
@@ -1,5 +1,4 @@
 import { Bladeburner } from "../../Bladeburner/Bladeburner";
-import { SourceFileFlags } from "../../SourceFile/SourceFileFlags";
 import { IPlayer } from "../IPlayer";
 
 export function canAccessBladeburner(this: IPlayer): boolean {
@@ -7,7 +6,7 @@ export function canAccessBladeburner(this: IPlayer): boolean {
     return false;
   }
 
-  return this.bitNodeN === 6 || this.bitNodeN === 7 || SourceFileFlags[6] > 0 || SourceFileFlags[7] > 0;
+  return this.bitNodeN === 6 || this.bitNodeN === 7 || this.sourceFileLvl(6) > 0 || this.sourceFileLvl(7) > 0;
 }
 
 export function inBladeburner(this: IPlayer): boolean {
diff --git a/src/PersonObjects/Player/PlayerObjectCorporationMethods.ts b/src/PersonObjects/Player/PlayerObjectCorporationMethods.ts
index 9916b2c41..c853aceae 100644
--- a/src/PersonObjects/Player/PlayerObjectCorporationMethods.ts
+++ b/src/PersonObjects/Player/PlayerObjectCorporationMethods.ts
@@ -3,11 +3,10 @@ import {
   CorporationUnlockUpgradeIndex,
   CorporationUnlockUpgrades,
 } from "../../Corporation/data/CorporationUnlockUpgrades";
-import { SourceFileFlags } from "../../SourceFile/SourceFileFlags";
 import { IPlayer } from "../IPlayer";
 
 export function canAccessCorporation(this: IPlayer): boolean {
-  return this.bitNodeN === 3 || SourceFileFlags[3] > 0;
+  return this.bitNodeN === 3 || this.sourceFileLvl(3) > 0;
 }
 
 export function hasCorporation(this: IPlayer): boolean {
@@ -22,7 +21,7 @@ export function startCorporation(this: IPlayer, corpName: string, additionalShar
     name: corpName,
   });
 
-  if (SourceFileFlags[3] === 3) {
+  if (this.sourceFileLvl(3) === 3) {
     const warehouseApi = CorporationUnlockUpgrades[CorporationUnlockUpgradeIndex.WarehouseAPI].index;
     const OfficeApi = CorporationUnlockUpgrades[CorporationUnlockUpgradeIndex.OfficeAPI].index;
 
diff --git a/src/PersonObjects/Player/PlayerObjectGangMethods.ts b/src/PersonObjects/Player/PlayerObjectGangMethods.ts
index 6d64ed105..b9c781fb2 100644
--- a/src/PersonObjects/Player/PlayerObjectGangMethods.ts
+++ b/src/PersonObjects/Player/PlayerObjectGangMethods.ts
@@ -1,7 +1,6 @@
 import { Factions } from "../../Faction/Factions";
 import { Faction } from "../../Faction/Faction";
 import { Gang } from "../../Gang/Gang";
-import { SourceFileFlags } from "../../SourceFile/SourceFileFlags";
 import { IPlayer } from "../IPlayer";
 
 // Amount of negative karma needed to manage a gang in BitNodes other than 2
@@ -11,7 +10,7 @@ export function canAccessGang(this: IPlayer): boolean {
   if (this.bitNodeN === 2) {
     return true;
   }
-  if (SourceFileFlags[2] <= 0) {
+  if (this.sourceFileLvl(2) <= 0) {
     return false;
   }
 
diff --git a/src/PersonObjects/Player/PlayerObjectGeneralMethods.tsx b/src/PersonObjects/Player/PlayerObjectGeneralMethods.tsx
index 33dbeb024..ae8d1bb27 100644
--- a/src/PersonObjects/Player/PlayerObjectGeneralMethods.tsx
+++ b/src/PersonObjects/Player/PlayerObjectGeneralMethods.tsx
@@ -45,7 +45,6 @@ import { SpecialServers } from "../../Server/data/SpecialServers";
 import { applySourceFile } from "../../SourceFile/applySourceFile";
 import { applyExploit } from "../../Exploits/applyExploits";
 import { SourceFiles } from "../../SourceFile/SourceFiles";
-import { SourceFileFlags } from "../../SourceFile/SourceFileFlags";
 import { influenceStockThroughCompanyWork } from "../../StockMarket/PlayerInfluencing";
 import { getHospitalizationCost } from "../../Hospital/Hospital";
 import { WorkerScript } from "../../Netscript/WorkerScript";
@@ -121,7 +120,7 @@ export function prestigeAugmentation(this: PlayerObject): void {
 
   this.queuedAugmentations = [];
 
-  const numSleeves = Math.min(3, SourceFileFlags[10] + (this.bitNodeN === 10 ? 1 : 0)) + this.sleevesFromCovenant;
+  const numSleeves = Math.min(3, this.sourceFileLvl(10) + (this.bitNodeN === 10 ? 1 : 0)) + this.sleevesFromCovenant;
   if (this.sleeves.length > numSleeves) this.sleeves.length = numSleeves;
   for (let i = this.sleeves.length; i < numSleeves; i++) {
     this.sleeves.push(new Sleeve(this));
@@ -467,7 +466,7 @@ export function gainIntelligenceExp(this: IPlayer, exp: number): void {
     console.error("ERROR: NaN passed into Player.gainIntelligenceExp()");
     return;
   }
-  if (SourceFileFlags[5] > 0 || this.intelligence > 0) {
+  if (this.sourceFileLvl(5) > 0 || this.intelligence > 0) {
     this.intelligence_exp += exp;
     this.intelligence = Math.floor(this.calculateSkill(this.intelligence_exp));
   }
@@ -1037,7 +1036,7 @@ export function getWorkMoneyGain(this: IPlayer): number {
   // If player has SF-11, calculate salary multiplier from favor
   let bn11Mult = 1;
   const company = Companies[this.companyName];
-  if (SourceFileFlags[11] > 0) {
+  if (this.sourceFileLvl(11) > 0) {
     bn11Mult = 1 + company.favor / 100;
   }
 
@@ -2700,7 +2699,7 @@ export function gotoLocation(this: IPlayer, to: LocationName): boolean {
 }
 
 export function canAccessGrafting(this: IPlayer): boolean {
-  return this.bitNodeN === 10 || SourceFileFlags[10] > 0;
+  return this.bitNodeN === 10 || this.sourceFileLvl(10) > 0;
 }
 
 export function giveExploit(this: IPlayer, exploit: Exploit): void {
@@ -2738,7 +2737,7 @@ export function setMult(this: IPlayer, name: string, mult: number): void {
 }
 
 export function canAccessCotMG(this: IPlayer): boolean {
-  return this.bitNodeN === 13 || SourceFileFlags[13] > 0;
+  return this.bitNodeN === 13 || this.sourceFileLvl(13) > 0;
 }
 
 export function sourceFileLvl(this: IPlayer, n: number): number {
diff --git a/src/Prestige.ts b/src/Prestige.ts
index 518847522..36e2c7acb 100755
--- a/src/Prestige.ts
+++ b/src/Prestige.ts
@@ -20,7 +20,7 @@ import { LiteratureNames } from "./Literature/data/LiteratureNames";
 
 import { GetServer, AddToAllServers, initForeignServers, prestigeAllServers } from "./Server/AllServers";
 import { prestigeHomeComputer } from "./Server/ServerHelpers";
-import { SourceFileFlags, updateSourceFileFlags } from "./SourceFile/SourceFileFlags";
+import { updateSourceFileFlags } from "./SourceFile/SourceFileFlags";
 import { SpecialServers } from "./Server/data/SpecialServers";
 import { deleteStockMarket, initStockMarket, initSymbolToStockMap } from "./StockMarket/StockMarket";
 import { Terminal } from "./Terminal";
@@ -139,7 +139,7 @@ export function prestigeAugmentation(): void {
   if (Player.bitNodeN === 8) {
     Player.money = BitNode8StartingMoney;
   }
-  if (Player.bitNodeN === 8 || SourceFileFlags[8] > 0) {
+  if (Player.bitNodeN === 8 || Player.sourceFileLvl(8) > 0) {
     Player.hasWseAccount = true;
     Player.hasTixApiAccess = true;
   }
@@ -198,9 +198,9 @@ export function prestigeSourceFile(flume: boolean): void {
   // Re-create foreign servers
   initForeignServers(Player.getHomeComputer());
 
-  if (SourceFileFlags[9] >= 2) {
+  if (Player.sourceFileLvl(9) >= 2) {
     homeComp.setMaxRam(128);
-  } else if (SourceFileFlags[1] > 0) {
+  } else if (Player.sourceFileLvl(1) > 0) {
     homeComp.setMaxRam(32);
   } else {
     homeComp.setMaxRam(8);
@@ -234,10 +234,10 @@ export function prestigeSourceFile(flume: boolean): void {
   }
 
   // Give levels of NeuroFluxGoverner for Source-File 12. Must be done here before Augmentations are recalculated
-  if (SourceFileFlags[12] > 0) {
+  if (Player.sourceFileLvl(12) > 0) {
     Player.augmentations.push({
       name: AugmentationNames.NeuroFluxGovernor,
-      level: SourceFileFlags[12],
+      level: Player.sourceFileLvl(12),
     });
   }
 
@@ -264,7 +264,7 @@ export function prestigeSourceFile(flume: boolean): void {
   if (Player.bitNodeN === 8) {
     Player.money = BitNode8StartingMoney;
   }
-  if (Player.bitNodeN === 8 || SourceFileFlags[8] > 0) {
+  if (Player.bitNodeN === 8 || Player.sourceFileLvl(8) > 0) {
     Player.hasWseAccount = true;
     Player.hasTixApiAccess = true;
   }
@@ -292,7 +292,7 @@ export function prestigeSourceFile(flume: boolean): void {
   Player.bladeburner = null;
 
   // Source-File 9 (level 3) effect
-  if (SourceFileFlags[9] >= 3) {
+  if (Player.sourceFileLvl(9) >= 3) {
     const hserver = Player.createHacknetServer();
 
     hserver.level = 100;
@@ -309,7 +309,7 @@ export function prestigeSourceFile(flume: boolean): void {
   staneksGift.prestigeSourceFile();
 
   // Gain int exp
-  if (SourceFileFlags[5] !== 0 && !flume) Player.gainIntelligenceExp(300);
+  if (Player.sourceFileLvl(5) !== 0 && !flume) Player.gainIntelligenceExp(300);
 
   resetPidCounter();
 }
diff --git a/src/RedPill.tsx b/src/RedPill.tsx
index ef538a250..2c49116bf 100644
--- a/src/RedPill.tsx
+++ b/src/RedPill.tsx
@@ -5,7 +5,6 @@ import React from "react";
 import { Player } from "./Player";
 import { prestigeSourceFile } from "./Prestige";
 import { PlayerOwnedSourceFile } from "./SourceFile/PlayerOwnedSourceFile";
-import { SourceFileFlags } from "./SourceFile/SourceFileFlags";
 import { SourceFiles } from "./SourceFile/SourceFiles";
 
 import { dialogBoxCreate } from "./ui/React/DialogBox";
@@ -69,7 +68,7 @@ function giveSourceFile(bitNodeNumber: number): void {
 export function enterBitNode(router: IRouter, flume: boolean, destroyedBitNode: number, newBitNode: number): void {
   if (!flume) {
     giveSourceFile(destroyedBitNode);
-  } else if (SourceFileFlags[5] === 0 && newBitNode !== 5) {
+  } else if (Player.sourceFileLvl(5) === 0 && newBitNode !== 5) {
     Player.intelligence = 0;
     Player.intelligence_exp = 0;
   }
diff --git a/src/SaveObject.tsx b/src/SaveObject.tsx
index 5179f0d2e..8cf6d29b2 100755
--- a/src/SaveObject.tsx
+++ b/src/SaveObject.tsx
@@ -6,7 +6,6 @@ import { loadAllGangs, AllGangs } from "./Gang/AllGangs";
 import { Player, loadPlayer } from "./Player";
 import { saveAllServers, loadAllServers, GetAllServers } from "./Server/AllServers";
 import { Settings } from "./Settings/Settings";
-import { SourceFileFlags } from "./SourceFile/SourceFileFlags";
 import { loadStockMarket, StockMarket } from "./StockMarket/StockMarket";
 import { staneksGift, loadStaneksGift } from "./CotMG/Helper";
 
@@ -126,7 +125,7 @@ class BitburnerSaveObject {
     // Save file name is based on current timestamp and BitNode
     const epochTime = Math.round(Date.now() / 1000);
     const bn = Player.bitNodeN;
-    let filename = `bitburnerSave_${epochTime}_BN${bn}x${SourceFileFlags[bn]}.json`;
+    let filename = `bitburnerSave_${epochTime}_BN${bn}x${Player.sourceFileLvl(bn) + 1}.json`;
     if (isRecovery) filename = "RECOVERY" + filename;
     return filename;
   }
diff --git a/src/StockMarket/ui/StockTicker.tsx b/src/StockMarket/ui/StockTicker.tsx
index 66cbf5134..e81baf439 100644
--- a/src/StockMarket/ui/StockTicker.tsx
+++ b/src/StockMarket/ui/StockTicker.tsx
@@ -16,7 +16,6 @@ import { OrderTypes } from "../data/OrderTypes";
 import { PositionTypes } from "../data/PositionTypes";
 
 import { IPlayer } from "../../PersonObjects/IPlayer";
-import { SourceFileFlags } from "../../SourceFile/SourceFileFlags";
 import { numeralWrapper } from "../../ui/numeralFormat";
 import { Money } from "../../ui/React/Money";
 
@@ -288,12 +287,12 @@ export function StockTicker(props: IProps): React.ReactElement {
 
   // Whether the player has access to orders besides market orders (limit/stop)
   function hasOrderAccess(): boolean {
-    return props.p.bitNodeN === 8 || SourceFileFlags[8] >= 3;
+    return props.p.bitNodeN === 8 || props.p.sourceFileLvl(8) >= 3;
   }
 
   // Whether the player has access to shorting stocks
   function hasShortAccess(): boolean {
-    return props.p.bitNodeN === 8 || SourceFileFlags[8] >= 2;
+    return props.p.bitNodeN === 8 || props.p.sourceFileLvl(8) >= 2;
   }
 
   return (
diff --git a/src/StockMarket/ui/StockTickerPositionText.tsx b/src/StockMarket/ui/StockTickerPositionText.tsx
index 3a8386f15..6bccf1852 100644
--- a/src/StockMarket/ui/StockTickerPositionText.tsx
+++ b/src/StockMarket/ui/StockTickerPositionText.tsx
@@ -9,7 +9,6 @@ import { Stock } from "../Stock";
 import { IPlayer } from "../../PersonObjects/IPlayer";
 import { numeralWrapper } from "../../ui/numeralFormat";
 import { Money } from "../../ui/React/Money";
-import { SourceFileFlags } from "../../SourceFile/SourceFileFlags";
 import Typography from "@mui/material/Typography";
 import Tooltip from "@mui/material/Tooltip";
 import Box from "@mui/material/Box";
@@ -67,7 +66,7 @@ function ShortPosition(props: IProps): React.ReactElement {
     percentageGains = 0;
   }
 
-  if (props.p.bitNodeN === 8 || SourceFileFlags[8] >= 2) {
+  if (props.p.bitNodeN === 8 || props.p.sourceFileLvl(8) >= 2) {
     return (
       <>
         <Box display="flex">
diff --git a/src/ui/CharacterStats.tsx b/src/ui/CharacterStats.tsx
index 0c24fb734..43df51bcd 100644
--- a/src/ui/CharacterStats.tsx
+++ b/src/ui/CharacterStats.tsx
@@ -6,7 +6,6 @@ import { BitNodeMultipliers } from "../BitNode/BitNodeMultipliers";
 import { HacknetServerConstants } from "../Hacknet/data/Constants";
 import { getPurchaseServerLimit } from "../Server/ServerPurchases";
 import { Settings } from "../Settings/Settings";
-import { SourceFileFlags } from "../SourceFile/SourceFileFlags";
 import { MoneySourceTracker } from "../utils/MoneySourceTracker";
 import { convertTimeMsToTimeElapsedString } from "../utils/StringHelperFunctions";
 import { use } from "./Context";
@@ -44,6 +43,7 @@ interface MultTableProps {
 }
 
 function MultiplierTable(props: MultTableProps): React.ReactElement {
+  const player = use.Player();
   return (
     <Table sx={{ display: "table", width: "100%", mb: (props.noMargin ?? false) === true ? 0 : 2 }}>
       <TableBody>
@@ -52,7 +52,7 @@ function MultiplierTable(props: MultTableProps): React.ReactElement {
             value = data[1] as number,
             modded = data[2] as number | null;
 
-          if (modded && modded !== value && SourceFileFlags[5] > 0) {
+          if (modded && modded !== value && player.sourceFileLvl(5) > 0) {
             return (
               <StatsRow key={mult} name={mult} color={props.color} data={{}}>
                 <>
@@ -88,7 +88,7 @@ function CurrentBitNode(): React.ReactElement {
       <Box>
         <Paper sx={{ p: 1 }}>
           <Typography variant="h5">
-            BitNode {player.bitNodeN}: {BitNodes[index].name} (Level {lvl})
+            BitNode {player.bitNodeN}: {BitNodes[index].name} (Level {lvl + 1})
           </Typography>
           <Typography sx={{ whiteSpace: "pre-wrap", overflowWrap: "break-word" }}>{BitNodes[index].info}</Typography>
         </Paper>
@@ -270,11 +270,13 @@ export function CharacterStats(): React.ReactElement {
                 data={{ content: `${player.purchasedServers.length} / ${getPurchaseServerLimit()}` }}
               />
               <StatsRow
-                name={`Hacknet ${player.bitNodeN === 9 || SourceFileFlags[9] > 0 ? "Servers" : "Nodes"} owned`}
+                name={`Hacknet ${player.bitNodeN === 9 || player.sourceFileLvl(9) > 0 ? "Servers" : "Nodes"} owned`}
                 color={Settings.theme.primary}
                 data={{
                   content: `${player.hacknetNodes.length}${
-                    player.bitNodeN === 9 || SourceFileFlags[9] > 0 ? ` / ${HacknetServerConstants.MaxServers}` : ""
+                    player.bitNodeN === 9 || player.sourceFileLvl(9) > 0
+                      ? ` / ${HacknetServerConstants.MaxServers}`
+                      : ""
                   }`,
                 }}
               />
@@ -320,7 +322,7 @@ export function CharacterStats(): React.ReactElement {
                 color={Settings.theme.cha}
                 data={{ level: player.charisma, exp: player.charisma_exp }}
               />
-              {player.intelligence > 0 && (player.bitNodeN === 5 || SourceFileFlags[5] > 0) && (
+              {player.intelligence > 0 && (player.bitNodeN === 5 || player.sourceFileLvl(5) > 0) && (
                 <StatsRow
                   name="Intelligence"
                   color={Settings.theme.int}
@@ -335,7 +337,7 @@ export function CharacterStats(): React.ReactElement {
         <Paper sx={{ p: 1 }}>
           <Typography variant="h5" color="primary" sx={{ display: "flex", alignItems: "center", flexWrap: "wrap" }}>
             Multipliers
-            {SourceFileFlags[5] > 0 && (
+            {player.sourceFileLvl(5) > 0 && (
               <Tooltip
                 title={
                   <Typography>