The green present gives you 5 points, the blue one gives you 1 point, the red one makes you lose 1 point, and the black one makes you lose 5 points. Try pressing the arrow/wasd keys, space, r, and click on the sprites. Get as many presents as you can! TTHHIISS IIISSS CHAAAAAAOSS
BTW, saying the black one making you lose 5 points is not discriminating. It is supposed to represent coal