Collect three chests with treasures. To move - use the arrow keys. Avoid fish - they can destroy you. To kill them - use "z" key. Some fish is immortal for your gun. So, be careful and get the score for bonus lives. You can select Hard and Effects levels; turn on/off Sound in Options window. To watch demo - press "Demo" button. Use "P" key to start/stop/pause. Small/Medium/Big bonus - Score depends on the level number.