One tap, one life
Everything rises. Your sub is permanently buoyant, so it climbs on its own and every tap fires the thrusters downward. Thread the gaps in the coral, stay off the cave roof, and see how far into the reef you get. There are no continues, no power-ups and no second chances — just the one score.
What makes it fair
Real hitboxes
Collision follows the drawn art, not a box around it. If you can see daylight through a gap, you fit through it. No run ends on something you didn't touch.
Medals, not luck
Copper through diamond, awarded every run that clears a tier rather than only on a personal best. A fiftieth copper still counts toward something.
Made from scratch
Every sprite, every sound effect and the whole soundtrack were written for this game. No stock art, no borrowed audio, no asset packs.
Plays anywhere
No account, no sign-in, no internet needed. Your progress follows your Apple Account, so a new phone doesn't cost you fifty-one submarines.
Get in touch
Found a bug, or got stuck on something? Write to support@sinkysub.com and a real person reads it.