Zpeciation Tough Days (TD) — heir to the genre of Tower Defense in the post apocalyptic world. You play the leader of a group of mercenaries working for the government. All levels are connected by a single plot, and they will tell about the cataclysm. In your way there will be crowds of infected (eighteen kinds of monsters on eight unique maps). Equip your squad, be ready to meet with the infected, complete the tasks and get a good reward.