Zombie Zone Defence v1.2:

There are zones located throughout the map (You start at Zone 1) that when crouched on will start a zombie assault. The game will notify you when it's time to move onto the next zone. Each zone has a label to tell you what zone it is, and the current zone to be used is displayed on the top-right. There are 4 zones in total, each getting harder and harder. When you have completed zone 4 you win. Created by Ultrabot