Inspired by an old Atari 2600 game I wanted to create a flowlab game which isn't for mobile devices.
Use arrows keys to move and space to shoot the enemy submarines.
Collect the black divers that swim across and be sure to head to the surface to get more oxygen.
Only level 1 working but you can blast other submarines on level 2, still lots to sort out.http://flowlab.io/game/play/76103
Hope you enjoy.