Santa vs Zombies is an infinite wave top down shooter similar to the old flash ones or something like I MADE A GAME WITH ZOMBIES IN IT.
You play as Santa, obviously. There are 5 different weapons including the default pistol. The other 4 weapons spawn randomly and disappear after a while both if you don't pick them up or if you do and the guns use timer runs out.
Santas arsenal includes -
A machine gun that can shoot as fast as you can mash.
A shotgun that fires 5 pellets.
A laser rifle that pierces through zombies.
A rocket launcher.
Zombies spawn in slowly at first but things can really ramp up fast. Watch out for the big boss zombies and runners that spawn after a while.