Old MacDonald vs Zombies

Fight the ever growing zombie horde with the help of your prized cow in this hectic arcade game created in 72 hours for Ludum Dare #28. Instructions:Use the arrow keys to run around the field, dodging zombies and cleaning up after your cow.When your cow is happy, a heart appears over her head - this means shell come running whenever you call.Press the spacebar to call her to you, crushing all zombies in her path. More zombies in a row = bigger points!