Two players must pump a human heart by clicking two buttons in coordination: one acts as the systole movement, the other as the diastole. Pictures indicate what the character is doing, so the players must reproduce the heart rate according to the activity (e.g., running). The heart will receive damage (and eventually die) if the players press their buttons at the same time or if they play the wrong rhythm. When they keep pumping the heart to match the correct heartbeat for a short amount of time, they pass to a new activity. Aim for a high score!
Tried in Chrome & Firefox. Best played with headphones.