I like the look and feel of the game. The UI and overall presentation is great!
The gameplay was a little too simple though. I think the game would greatly benefit from one more element of gameplay because just flying through rings gets old pretty quick (and is a little reminiscent of Superman 64)
One simple change could be to have the player drop the presents into chimneys, requiring them to regulate their speed and get the proper timing down. This would add a lot more complexity to the game and add more variation to each playthrough making the final scores more varied from player to player.
Either way good job making a fun little game in a short amount of time