It's a arcade style side-scrolling shooter game. Your mission is rescue divers and attack enemies.

(Remake of favorite Atari 2600 game - seaquest)

Your mission here:
Rescue Divers
Get them into your sub. You can retrieve five divers one time.
After that, you must surface to release them for bonus score.

Attack enemies

You must watch your head.
There are so many kinds of enemies, Such as killer sharks, enemy subs, etc.
Each stage provides several mini bosses and a big boss to fight.