: Between dungeon chapters, players visit a casino to spend coins on spell upgrades, trinkets, or soul hearts to bolster their chances. Development and Aesthetic
is a puzzle-based "deckbuilding roguelike" and a prequel to the iconic The Binding of Isaac . Developed by Edmund McMillen and James Interactive, the game features a distinct cardboard-diorama aesthetic and centers on the character Bum-bo’s quest to retrieve his stolen coin from a mysterious entity in the sewers. Core Gameplay and Mechanics
The game's visual style evolved from simple paper cutouts to a 3D-inspired cardboard world, designed to look rough and childlike.