If you want to try the game out for free and don't mind ads then check out:
https://play.google.com/store/apps/details?id=fi.varisware.xmasgameads

Premise:
Santa Claus is coming to town but he is in trouble! Some people have clearly lost their xmas spirit and are trying to shoot Santa down from the sky. Help Santa Claus save xmas by dropping presents on peoples houses and fighting enemies.

Goal:
Drop presents on peoples houses to progress in levels and try to stay alive!

How to play:
Use the left-side pad to move Santa around.
To drop presents on houses press the present-button.
Press FIRE to shoot(when you have ammo) and press the POW-button to use a collected power up!