Obby: Fish training

Obby: Fish Training turns swimming into a progression ladder. You start as a small fish working an obstacle course built from currents and jumps, and every stretch you clear pushes you toward a bigger, stronger creature to control. The catch is that speed alone doesn't carry you - some sections punish a fish that's too big to fit through a gap it could handle two forms ago.

The rebirth system is what keeps runs interesting once you've seen the early course a few times: cashing in your progress resets you to a weaker fish but opens up eras of the ocean you couldn't reach before. Between that and a leaderboard tracking the fastest swimmers, there's always a reason to trade a comfortable form for a harder, faster one.

How to play

Swim through the underwater course, using jumps and currents to reach checkpoints. Collecting energy along the way lets you evolve into stronger fish, though bigger forms can struggle to fit through some tighter passages the small ones cleared easily. Once you've built up enough progress, use the rebirth system to reset into a fresh underwater era with new challenges and a shot at climbing the leaderboard.

Controls

W, A, S, D to swim, Spacebar to jump, right mouse button to rotate the camera, and the scroll wheel to zoom in or out. On mobile, use the on-screen joystick to move and the action button to jump.