Backpack Hero takes the familiar roguelike formula and turns it on its head by making your backpack the real battlefield. Rather than simply collecting cards or items, you must carefully arrange every piece of equipment, potion, and trinket into a finite grid—every placement decision can amplify an item’s power or render it useless. This mechanic adds an unexpected layer of spatial puzzle-solving to each run: a sword nestled beside a quiver becomes deadlier, while a poorly placed shield might leave you one step away from defeat.