I really liked the idea, impressive for a 4 hour-made game. My suggestion is to make the box bounce when it hits the sides of the screen, it will be less hard. Congratulations and happy holidays (:
My original idea was make something like mario, when the gift pass the screen sides, the camera moves, but i was so sloth :P
The game is good, but make the controlls for the game shown in the very start, on the start screen and perhaps that the gift can't leave the screen. Otherwise, the controlls are smooth and well made.
it's simple and good..
but it's too hard!
Wrapping the screen would add alot to this game. Overall, nice work.
I think you forgot to add that you can't touch the walls either.