You are a red cell that must catch the green virus in an epic racing among heart, pulmons and brains (it's in a human body).

 

Use Y to left and C to right (Usually it's A and D or the arrow keys but.. fuck the rules)

And X to jump.

Catch up the virus in less than 3 minutes ! Take the green balls to better your speed.

 

Be careful, the collisions will slow you down.