Fix only the 2-player Car Racing and Bike Racing games in M. Usman Arcade Games.
Make both players' vehicles move faster as the game progresses. Gradually increase road/obstacle scrolling speed and difficulty every 10 seconds or after each score milestone. Apply the speed increase consistently to both players, while keeping controls responsive and gameplay fair. Add a small speed indicator.
Do not change the design, controls, other games or existing features. Do not rebuild the app.