Player 1 (Red): W to move forward, S to move backward, A to steer left, and D to steer right. Player 2 (Blue): ↑ to move forward, ↓ to move backward, ← to steer left, and → to steer right. In this game, you must compete with your opponent to avoid sharks. The fish who survives the longest wins.
Music is Aqua Harbor, from Kirby: Planet Robobot.