HOW TO PLAY
How to play Deep Thirteen
An original 2D submarine exploration game. Steer around reefs to reach the seabed and recover a signal, then return to the surface before oxygen runs out or hull damage becomes critical.
Controls
- Arrow keys or on-screen direction buttons; restart
- R or the on-screen button: restart
Tips
- Plan a route down and back before diving; repeated reef collisions waste oxygen.
- Full rules and control tips are shown in the game.