diff --git a/src/phases/game-over-phase.ts b/src/phases/game-over-phase.ts
index 26a0c45f449..84a4a4e8ef9 100644
--- a/src/phases/game-over-phase.ts
+++ b/src/phases/game-over-phase.ts
@@ -125,10 +125,9 @@ export class GameOverPhase extends BattlePhase {
           }
 
           const clear = (endCardPhase?: EndCardPhase) => {
-            if (newClear) {
-              this.handleUnlocks();
-            }
             if (this.isVictory && newClear) {
+              this.handleUnlocks();
+
               for (const species of this.firstRibbons) {
                 this.scene.unshiftPhase(new RibbonModifierRewardPhase(this.scene, modifierTypes.VOUCHER_PLUS, species));
               }
@@ -183,6 +182,8 @@ export class GameOverPhase extends BattlePhase {
       this.scene.gameData.offlineNewClear(this.scene).then(result => {
         doGameOver(result);
       });
+    } else {
+      doGameOver(false);
     }
   }
 
diff --git a/src/test/phases/game-over-phase.test.ts b/src/test/phases/game-over-phase.test.ts
new file mode 100644
index 00000000000..2e19d5fe954
--- /dev/null
+++ b/src/test/phases/game-over-phase.test.ts
@@ -0,0 +1,77 @@
+import { Biome } from "#enums/biome";
+import { Abilities } from "#enums/abilities";
+import { Moves } from "#enums/moves";
+import { Species } from "#enums/species";
+import GameManager from "#test/utils/gameManager";
+import Phaser from "phaser";
+import { afterEach, beforeAll, beforeEach, describe, expect, it, vi } from "vitest";
+import { achvs } from "#app/system/achv";
+import { Unlockables } from "#app/system/unlockables";
+
+describe("Game Over Phase", () => {
+  let phaserGame: Phaser.Game;
+  let game: GameManager;
+
+  beforeAll(() => {
+    phaserGame = new Phaser.Game({
+      type: Phaser.HEADLESS,
+    });
+  });
+
+  afterEach(() => {
+    game.phaseInterceptor.restoreOg();
+  });
+
+  beforeEach(() => {
+    game = new GameManager(phaserGame);
+    game.override
+      .moveset([ Moves.MEMENTO, Moves.ICE_BEAM, Moves.SPLASH ])
+      .ability(Abilities.BALL_FETCH)
+      .battleType("single")
+      .disableCrits()
+      .enemyAbility(Abilities.BALL_FETCH)
+      .enemyMoveset(Moves.SPLASH)
+      .startingWave(200)
+      .startingBiome(Biome.END)
+      .startingLevel(10000);
+  });
+
+  it("winning a run should give rewards", async () => {
+    await game.classicMode.startBattle([ Species.BULBASAUR ]);
+    vi.spyOn(game.scene, "validateAchv");
+
+    // Note: `game.doKillOpponents()` does not properly handle final boss
+    // Final boss phase 1
+    game.move.select(Moves.ICE_BEAM);
+    await game.toNextTurn();
+
+    // Final boss phase 2
+    game.move.select(Moves.ICE_BEAM);
+    await game.phaseInterceptor.to("PostGameOverPhase", false);
+
+    // The game refused to actually give the vouchers during tests,
+    // so the best we can do is to check that their reward phases occurred.
+    expect(game.phaseInterceptor.log.includes("GameOverPhase")).toBe(true);
+    expect(game.phaseInterceptor.log.includes("UnlockPhase")).toBe(true);
+    expect(game.phaseInterceptor.log.includes("RibbonModifierRewardPhase")).toBe(true);
+    expect(game.scene.gameData.unlocks[Unlockables.ENDLESS_MODE]).toBe(true);
+    expect(game.scene.validateAchv).toHaveBeenCalledWith(achvs.CLASSIC_VICTORY);
+    expect(game.scene.gameData.achvUnlocks[achvs.CLASSIC_VICTORY.id]).toBeTruthy();
+  });
+
+  it("losing a run should not give rewards", async () => {
+    await game.classicMode.startBattle([ Species.BULBASAUR ]);
+    vi.spyOn(game.scene, "validateAchv");
+
+    game.move.select(Moves.MEMENTO);
+    await game.phaseInterceptor.to("PostGameOverPhase", false);
+
+    expect(game.phaseInterceptor.log.includes("GameOverPhase")).toBe(true);
+    expect(game.phaseInterceptor.log.includes("UnlockPhase")).toBe(false);
+    expect(game.phaseInterceptor.log.includes("RibbonModifierRewardPhase")).toBe(false);
+    expect(game.phaseInterceptor.log.includes("GameOverModifierRewardPhase")).toBe(false);
+    expect(game.scene.gameData.unlocks[Unlockables.ENDLESS_MODE]).toBe(false);
+    expect(game.scene.validateAchv).not.toHaveBeenCalledWith(achvs.CLASSIC_VICTORY);
+    expect(game.scene.gameData.achvUnlocks[achvs.CLASSIC_VICTORY.id]).toBeFalsy();
+  });
+});
diff --git a/src/test/utils/phaseInterceptor.ts b/src/test/utils/phaseInterceptor.ts
index 17b6c7a6c81..4029e5e168c 100644
--- a/src/test/utils/phaseInterceptor.ts
+++ b/src/test/utils/phaseInterceptor.ts
@@ -55,6 +55,11 @@ import {
 import { ModifierRewardPhase } from "#app/phases/modifier-reward-phase";
 import { PartyExpPhase } from "#app/phases/party-exp-phase";
 import { ExpPhase } from "#app/phases/exp-phase";
+import { GameOverPhase } from "#app/phases/game-over-phase";
+import { RibbonModifierRewardPhase } from "#app/phases/ribbon-modifier-reward-phase";
+import { GameOverModifierRewardPhase } from "#app/phases/game-over-modifier-reward-phase";
+import { UnlockPhase } from "#app/phases/unlock-phase";
+import { PostGameOverPhase } from "#app/phases/post-game-over-phase";
 
 export interface PromptHandler {
   phaseTarget?: string;
@@ -113,10 +118,15 @@ type PhaseClass =
   | typeof MysteryEncounterBattlePhase
   | typeof MysteryEncounterRewardsPhase
   | typeof PostMysteryEncounterPhase
+  | typeof RibbonModifierRewardPhase
+  | typeof GameOverModifierRewardPhase
   | typeof ModifierRewardPhase
   | typeof PartyExpPhase
   | typeof ExpPhase
-  | typeof EncounterPhase;
+  | typeof EncounterPhase
+  | typeof GameOverPhase
+  | typeof UnlockPhase
+  | typeof PostGameOverPhase;
 
 type PhaseString =
   | "LoginPhase"
@@ -167,10 +177,15 @@ type PhaseString =
   | "MysteryEncounterBattlePhase"
   | "MysteryEncounterRewardsPhase"
   | "PostMysteryEncounterPhase"
+  | "RibbonModifierRewardPhase"
+  | "GameOverModifierRewardPhase"
   | "ModifierRewardPhase"
   | "PartyExpPhase"
   | "ExpPhase"
-  | "EncounterPhase";
+  | "EncounterPhase"
+  | "GameOverPhase"
+  | "UnlockPhase"
+  | "PostGameOverPhase";
 
 type PhaseInterceptorPhase = PhaseClass | PhaseString;
 
@@ -245,10 +260,15 @@ export default class PhaseInterceptor {
     [ MysteryEncounterBattlePhase, this.startPhase ],
     [ MysteryEncounterRewardsPhase, this.startPhase ],
     [ PostMysteryEncounterPhase, this.startPhase ],
+    [ RibbonModifierRewardPhase, this.startPhase ],
+    [ GameOverModifierRewardPhase, this.startPhase ],
     [ ModifierRewardPhase, this.startPhase ],
     [ PartyExpPhase, this.startPhase ],
     [ ExpPhase, this.startPhase ],
     [ EncounterPhase, this.startPhase ],
+    [ GameOverPhase, this.startPhase ],
+    [ UnlockPhase, this.startPhase ],
+    [ PostGameOverPhase, this.startPhase ],
   ];
 
   private endBySetMode = [