diff --git a/client/src/components/infoview/main.tsx b/client/src/components/infoview/main.tsx
index 0680fa9..a230f45 100644
--- a/client/src/components/infoview/main.tsx
+++ b/client/src/components/infoview/main.tsx
@@ -39,7 +39,7 @@ import { Hints } from '../hints';
 /** Wrapper for the two editors. It is important that the `div` with `codeViewRef` is
  * always present, or the monaco editor cannot start.
  */
-export function DualEditor({ level, codeviewRef, levelId, worldId, lastLevel = false }) {
+export function DualEditor({ level, codeviewRef, levelId, worldId, worldSize }) {
   const ec = React.useContext(EditorContext)
   const { commandLineMode } = React.useContext(InputModeContext)
   return <>
@@ -48,7 +48,7 @@ export function DualEditor({ level, codeviewRef, levelId, worldId, lastLevel = f
       <div ref={codeviewRef} className={'codeview'}></div>
     </div>
     {ec ?
-      <DualEditorMain worldId={worldId} levelId={levelId} level={level} lastLevel={lastLevel} /> :
+      <DualEditorMain worldId={worldId} levelId={levelId} level={level} worldSize={worldSize} /> :
       // TODO: Style this if relevant.
       <>
         <p>Editor is starting up...</p>
@@ -59,7 +59,7 @@ export function DualEditor({ level, codeviewRef, levelId, worldId, lastLevel = f
 }
 
 /** The part of the two editors that needs the editor connection first */
-function DualEditorMain({ worldId, levelId, level, lastLevel }: { worldId: string, levelId: number, level: LevelInfo, lastLevel: boolean }) {
+function DualEditorMain({ worldId, levelId, level, worldSize }: { worldId: string, levelId: number, level: LevelInfo, worldSize: number }) {
   const ec = React.useContext(EditorContext)
   const gameId = React.useContext(GameIdContext)
   const { commandLineMode } = React.useContext(InputModeContext)
@@ -109,7 +109,7 @@ function DualEditorMain({ worldId, levelId, level, lastLevel }: { worldId: strin
           <WithLspDiagnosticsContext>
             <ProgressContext.Provider value={allProgress}>
               {commandLineMode ?
-                <CommandLineInterface world={worldId} level={levelId} data={level} lastLevel={lastLevel}/>
+                <CommandLineInterface world={worldId} level={levelId} data={level} worldSize={worldSize}/>
                 :
                 <Main key={`${worldId}/${levelId}`} world={worldId} level={levelId} />
               }
@@ -282,7 +282,7 @@ function GoalsTab({ proofStep }: { proofStep: ProofStep }) {
 }
 
 /** The interface in command line mode */
-export function CommandLineInterface(props: { world: string, level: number, data: LevelInfo, lastLevel: boolean }) {
+export function CommandLineInterface(props: { world: string, level: number, data: LevelInfo, worldSize: number }) {
 
   const ec = React.useContext(EditorContext)
   const editor = React.useContext(MonacoEditorContext)
@@ -456,7 +456,7 @@ export function CommandLineInterface(props: { world: string, level: number, data
             )}
             {completed && i == proof.length - 1 &&
               <div className="button-row">
-                {props.lastLevel ?
+                {props.level >= props.worldSize ?
                   <Button to={`/${gameId}`}>
                     <FontAwesomeIcon icon={faHome} />&nbsp;Leave World
                   </Button>
diff --git a/client/src/components/level.tsx b/client/src/components/level.tsx
index 82b72e1..86170a8 100644
--- a/client/src/components/level.tsx
+++ b/client/src/components/level.tsx
@@ -318,7 +318,7 @@ function PlayableLevel({worldId, levelId}) {
               <EditorContext.Provider value={editorConnection}>
                 <MonacoEditorContext.Provider value={editor}>
                   <div className="exercise">
-                    <DualEditor level={level?.data} codeviewRef={codeviewRef} levelId={levelId} worldId={worldId} />
+                    <DualEditor level={level?.data} codeviewRef={codeviewRef} levelId={levelId} worldId={worldId} worldSize={gameInfo.data?.worldSize[worldId]}/>
                   </div>
                 </MonacoEditorContext.Provider>
               </EditorContext.Provider>
@@ -388,7 +388,7 @@ function PlayableLevel({worldId, levelId}) {
             <EditorContext.Provider value={editorConnection}>
               <MonacoEditorContext.Provider value={editor}>
                 <div className="exercise">
-                  <DualEditor level={level?.data} codeviewRef={codeviewRef} levelId={levelId} worldId={worldId} />
+                  <DualEditor level={level?.data} codeviewRef={codeviewRef} levelId={levelId} worldId={worldId} worldSize={gameInfo.data?.worldSize[worldId]}/>
                 </div>
               </MonacoEditorContext.Provider>
             </EditorContext.Provider>
diff --git a/client/src/components/world_selection_menu.tsx b/client/src/components/world_selection_menu.tsx
index c1b115c..7d71090 100644
--- a/client/src/components/world_selection_menu.tsx
+++ b/client/src/components/world_selection_menu.tsx
@@ -148,8 +148,10 @@ export function WorldSelectionMenu() {
           <h2>Delete Progress?</h2>
 
           <p>Do you want to delete your saved progress irreversibly?</p>
-          <p>(This only affects your saved proofs, no levels are ever locked.
-            Saves from other games are not deleted.)</p>
+          <p>
+            (This deletes your proofs and your collected inventory.
+            Saves from other games are not deleted.)
+          </p>
 
           <Button onClick={eraseProgress} to="">Delete</Button>
           <Button onClick={downloadAndErase} to="">Download & Delete</Button>