Use the Arrow Keys or WASD to move. You need to press all of the switches at the same time to make the chimney glow. Enter the chimney while it's glowing to move to the next level.

When you need an extra boost or another object to hold down a switch, press Z to throw a green platform. You can throw a platform in any direction by moving in that direction before throwing. You'll have a limited number of these platforms in each level, but they'll disappear and return to you after a short time.

Later, you'll also learn to use a red platform. This one can be thrown with X and will never disappear, but if you touch it you'll pick it up again.

Can you deliver all the gifts and save Christmas?