Castle Back

Fortress building

Castle Back is a single-player voxel auto-battler roguelite for PC. You build a fortress on the back of a giant beast, then send it into battle. Once a fight begins, the fortress attacks on its own, so your decisions come before combat: what to buy, where to stack it and which parts of the structure to protect.

There are 60 blocks, including walls, cannons, catapults, mortars, harpoons, bells, water tanks and war drums. Stack three blocks of the same kind to merge them into a stronger ★2 or ★3 block. Ten hidden recipes fuse two blocks into something new, and 38 relics change a rule for the rest of an expedition.