There has been an invasion of germs (little red monsters)! It is your job to defend against them, and ingest them. To do this, use the arrow keys to move and wrap your teeth (the small pink stubs) around them, or their little cloud of evil. However, don't ingest the Vitamin D (sunlight) - it's good for you. Good luck!
Completely coded and drawn by me, scratchrocks50 (Very) loosely based on the job of a white blood cell, which swallows bacteria that enters the body. The shape is not the same, though the motion of wrapping around the victim and consuming it is similar. You can find out more about them on this Wikipedia article: https://en.wikipedia.org/wiki/White_blood_cell .