Copter Race Contest mini-game:
Destroy 2,500 gifts, then go to the upper level of Mount Crumpit to access the Copter Race Contest mini-game.

Bike Race mini-game:
Destroy 3,000 gifts and complete 100% of the game. Look behind the bookcase in the workshop with the sleigh to access the Bike Race mini-game.

Reaching high places:
If you are having trouble getting to high places, look for a bar and press A. When you are swinging with Y, press A button to make The Grinch jump off the bar.
Information in this section was contributed by sc.wilson.

Extra presents:
Use the egg launcher to shoot the kids to make them drop their presents.

Hidden present:
Look on top of the town's Christmas tree to find a hidden present.

Entering Town Hall:
Use the egg launcher to shoot the clock to get inside Town Hall.

Finding the blueprints:
Go to the bottom level of Town Hall and find the three rugs on the wall that appear differently than the others. Pull out the rugs to find the blueprints