Here's a windows build of this game I whipped out today in about 6 hours using all free assets from Unity's asset store with the exception of UFPS, which I own. 1-5 select a weapon, wasd + mouse controls. Infinite ammo, infinite zombies, infinite baby. Enjoy! :D
Extract the files, run the .exe. Typical fps controls, 1-5 change weapon. This is dumb and kinda fun actually. See how long you can survive. :D Enjoy!