diff --git a/apps/web/src/arcade-games/complement-race/Validator.ts b/apps/web/src/arcade-games/complement-race/Validator.ts
index 3d39c2cb..6c4094ac 100644
--- a/apps/web/src/arcade-games/complement-race/Validator.ts
+++ b/apps/web/src/arcade-games/complement-race/Validator.ts
@@ -812,6 +812,11 @@ export class ComplementRaceValidator
   private checkWinCondition(state: ComplementRaceState): string | null {
     const { config, players } = state
 
+    // Infinite mode: Never end the game
+    if (config.winCondition === 'infinite') {
+      return null
+    }
+
     // Practice mode: First to reach goal
     if (config.style === 'practice') {
       for (const [playerId, player] of Object.entries(players)) {
diff --git a/apps/web/src/arcade-games/complement-race/index.tsx b/apps/web/src/arcade-games/complement-race/index.tsx
index 44f2b23b..38ff150e 100644
--- a/apps/web/src/arcade-games/complement-race/index.tsx
+++ b/apps/web/src/arcade-games/complement-race/index.tsx
@@ -41,7 +41,7 @@ const defaultConfig: ComplementRaceConfig = {
   passengerCount: 6,
   maxConcurrentPassengers: 3,
   raceGoal: 20,
-  winCondition: 'route-based',
+  winCondition: 'infinite', // Sprint mode is infinite by default (Steam Sprint)
   routeCount: 3,
   targetScore: 100,
   timeLimit: 300,
diff --git a/apps/web/src/lib/arcade/game-configs.ts b/apps/web/src/lib/arcade/game-configs.ts
index fca0aaf9..7bc8fa8e 100644
--- a/apps/web/src/lib/arcade/game-configs.ts
+++ b/apps/web/src/lib/arcade/game-configs.ts
@@ -89,7 +89,7 @@ export interface ComplementRaceGameConfig {
   raceGoal: number // questions to win practice mode (default 20)
 
   // Win Conditions
-  winCondition: 'route-based' | 'score-based' | 'time-based'
+  winCondition: 'route-based' | 'score-based' | 'time-based' | 'infinite'
   targetScore?: number // for score-based (e.g., 100)
   timeLimit?: number // for time-based (e.g., 300 seconds)
   routeCount?: number // for route-based (e.g., 3 routes)
@@ -171,7 +171,7 @@ export const DEFAULT_COMPLEMENT_RACE_CONFIG: ComplementRaceGameConfig = {
   raceGoal: 20,
 
   // Win conditions
-  winCondition: 'route-based',
+  winCondition: 'infinite', // Sprint mode is infinite by default (Steam Sprint)
   routeCount: 3,
   targetScore: 100,
   timeLimit: 300,