"You have been chosen as a volunteer for the 'Egg Squeeze' exam—a test that evaluates one's psychokinetic intuition of biological makeup. In each test, you will be asked to squeeze an egg for a short period of time. The objective is to estimate the egg's unique breaking point and release your grasp before it cracks. You will be graded relative to your synergy with the eggs."
Thus reads the letter at the beginning of Egg Squeeze, a game where you hold the mouse button to squeeze an egg and release the mouse button to stop squeezing it.