Guns Merge Zombie Train Attack

Hordes of zombies are coming to do zombie train attack. You have to merge guns and do zombie train defense. In this zombie train fight many zombies are coming to you from different directions. You have the powerful guns which you can use to merge the guns and do some FPS shooting to kill the zombies. Shoot the zombies to stay alive and win the fight for survival in this gun versus zombies’ game. Merge weapons and fight the zombies with bigger firepower.