Apocalypse: The Zombie Auto Chess System

[New book: The God-Tier Shopkeeper: Billions of Spirit Pets Evolve in Seconds] On arriving in the apocalypse, Zhang Han accidentally obtained an auto-chess System. Not only could he combine zombies, he could also form powerful synergies with them! There were swordsman synergies with peerless sword intent, general synergies that swept all before them, and assassin synergies that vanished into the void, among others... In this apocalypse where strength is everything, Zhang Han only needs to keep combining zombies to become the strongest! The apocalypse is just one big game of auto-chess, and I, Zhang Han, am the one moving the pieces!