As close to perfect.
First i'd like to say sorry. As a fellow developer i know how it is to make a game diffcutly for those of us that like a challenge but to be critizied by the masses because they can't take the time. to understand.
I got 5 presents i did miss one. Which i do plan on going back and getting and my guess is there is a special something for making to the end with the red balloon (or at least there should be :). I Loved the idea for the game i would have been happy to see a few more things for the balloon but the puzzles were amazing and had me thinking pretty hard.
There should be a second on maybe a 101th :) but good job dude. wish the game was longer so i could play more .