Gravity Snowman ChristmasPlay Gravity Snowman Christmas online For FREE! - Gravity Snowman Christmas Online is a Strategy game on Ufreegames.Com. You can play Gravity Snowman Christmas Online in your browser for free. A mob of fun-loving zombies is about to invade your home, and your only defense is an arsenal of zombie-zapping plants. Use peashooters, wall-nuts, cherry bombs and more to mulchify zombies before they reach your front door. The fun never dies! .