Your mission in this addictive shooting game is to fend off the attacking bubbles while upgrading your ship. you must destroy the giant orb in the middle of the game screen. to be able to destroy the orb, you must kill enough enemy units to level up and upgrade your ship so that you are strong enough to face the mighty giant orb. use wasd keys to move around. press 1-7 number keys to level up. use your mouse to aim and click left mouse button to shoot. have fun!
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