Scramble up the side of a futuristic skyscraper.

Chicago-based video game designer William Chyr has designed a world governed by a consistent bizarro-physics, where a player can walk up walls and ceilings and gravity is partially governed by colors.

The sphere of Manifold Garden is made of Escher-like staircases, cities of lattice windows, and mysterious repeating structures. (“As complex as it seems, it’s all just boxes,” Chyr says.) Backed by the independent game funder Indie Fund, the developer has now been able to hire another part-time programmer, but this is mostly a full-time, solitary labor of love that’s taken Chyr three years to complete.