Isometric Dungeon Chamber 3D QR Code for Posters

About this design

An isometric dungeon chamber with gray brick walls, a heavy iron chain lying across a cobblestone floor and glowing blue sigils at the edges. The three square pits sunk into the stone floor disguise the finder squares, while stacked gray blocks and cyan light pockets carry the modules. Pale stone against deep shadow and bright blue glow keeps the dark and light cells distinct. A neon blue outline traces the base of the slab against the black background.