Your submarine is the never ending mission to rescue all divers, avoid the dangers of the ocean and enemies.
Be aware of your oxygen supply, it is limited!, rescue divers and take them to the surface to refill your tank.
Make the most of your resources, use your EXP points to upgrade your ship, and keep the score high.
Customize your ship speed and power.
Upload your score to the leaderboards and compete with your friends for the highest score.