Pack your backpack and survive waves of the undead. A game with a unique backpack puzzle and block-building system. Build -> Fight -> Survive -> Repeat. No towers — you create a build that fights for you. Drag items, combine tetris block, and discover powerful synergies. 🎒 Backpack = Battlefield Puzzle Place blocks like Tetris Manage space, shape, and position Build your own strategy Every slot matters. ⚔️ Auto battle, real strategy Units fight automatically Your build decides the outcome No skill = no survival 🧟 Zombie waves Fast, heavy, and elite enemies Increasing difficulty Adapt or lose 🧩 Synergies win games Merge items Create combos Find powerful builds Every run is different. 🛡️ Puzzle Survive Optimize your backpack, balance attack and defense, and go as far as you can. 🎯 Why play Backpack builder gameplay Auto battle + strategy Deep synergies Endless zombie waves Roguelike replayability Fast, addictive runs Privacy Policy: https://say.games/privacy-policy Terms of Use: https://say.games/terms-of-use