Ah, free to play games: they really do seem to be taking the world by storm. Sort of like zombies. So it makes sense for a game in which kill horde upon horde of the walking dead to be free to play... or something. Anyway, Zombie HQ is a fairly popular game on iOS, and the developers just dropped an Android version on the Play Store.
Zombie HQ is a game in which you shoot zombies. It's an overhead run-and-gun shooter, if you want to get picky with the details.
It looks reasonably well made, and its 4.5 star rating on iOS would seem to support that inference. It also kind of looks pretty fun, too, which is something of a rarity in the so-popular-it's-kind-of-annoying zombie genre.
➤ WEAPONS including shotguns, assault rifles, sniper rifles, machine guns, flamethrowers, chainsaws, broadswords and more!
➤ Automated TURRETS and EXPLOSIVES
➤ Tons of character APPAREL, including centurion body armor, hockey masks, beer hats and more!
➤ Loads of FURNITURE for your Zombie HQ, including arcade machines, jukeboxes, pool tables, hot tubs, turntables and even guided missile systems!
➤ Zombie KILLING action and tons of MISSIONS to choose from, including scavenger, food drop, boss battle and more!
➤ Schedule special missions for extra BONUS REWARDS
Zombie HQ is free to play, but you can choose to pay real money for some extra items. You can disable in-app purchasing by adjusting your device settings.
Head to the Play Store to get it now - it's free, though obviously in-app purchases will come into play at some point.