Right-click game to play full-screen (if available)
Use your mouse to control a submarine. The submarine shoots automatically.
You can drop the bomb by left click, bomb will be moving forward. Following left click will blow up earlier dropped bomb.
Collect batteries - the more batteries you collect, the more weapons and upgrades you can activate. Anytime you can press the "M" key to switch music on/off, or the "S" key to switch event sounds.
