You have to monitor a simulacrum of a heart and watch the oxygen-depleted blood get pumped to the lungs, and from the lungs to the rest of the body via the Heart. Use the left mouse button to place white blood cells to attack viruses, and the right mouse button deploy shockwaves to combat cholesterol blockages. See how much damage you can prevent within the time limit and set a high score! This game includes a colour-blind friendly mode accessible by pressing [C].
Go and play it now!