Tap the scree ad cotrol the firig speed through buttos.

Merge Rush Z is an addictive free zombie shooter game where you merge powerful guns to battle zombies with your heroine and her squad. Zombies pose a variety of challenges with their size, speed, abilities and powerful bosses! Engage in thrilling firing action, using a combination of guns, deadly items and your wits to clear the zombie waves. Tap, bang and blast your way to survive the Zombie Outbreak!