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 she'll 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!