It is Christmas time and a little girl is waiting for Santa to bring her presents. But this time, zombies are also attacking the city and you have to protect the little girl long enough for Santa to bring her all of her 3 presents. Just keep smashing zombies and prevent them from reaching the girl's home long enough for the Santa to bring all 3 presents and then you will win and can go to next level. Just note that zombies have the ability to become invisible and will become faster and harder to kill as you progress, so don't underestimate them.
See the online Demo here: