Use the [W] and [S] keys to move the red blood cells up and down. Use the [up] [left] and [right] arrow keys to move the white blood cell. Try to get the red blood cell to the end of the tract. Good luck!
This was done to fulfill a requirement on a biology project, and for an "educational" game it actually turned out decent. Check the code to see the music used, I used too many tracks for me to want to post here. I apologize for my laziness. Oh, I know! to snap me out of my laziness, you could hit the like and favorite buttons! I'm sure that'll help! Disclaimer: this is close to nothing like what actually goes on in your arteries. But white blood cells really do kill germs and red blood cells really do carry oxygen. Also, germs really can kill red blood cells. Wash your hands, kids.
