Brain Attack

Battle germs inside the brain while avoid shooting the brain itself and suck up the leftovers.
You are miniaturized into a atomic size and inserted to the brain. Your job is to swept through the pathways of the brain, you must eliminate all particles of formaldehyde, which are attacking the brain. Try to not to shoot the brain itself and suck the leftover as they destroy or contaminate the brain.
Game Controls:
Use the Arrow keys to control yourself. Press Ctrl or Space bar to fire.

http://www.tutorialsto.com/flash/games003/brainattack.dcr.swf