Oxyd

You control a black orb that is trapped in a puzzle like labyrinth. A level is called a landscape and there are 200 landscapes to solve. The main gameplay element consists of opening the so-called oxydstones. You can bump against a oxydstone and a colored symbol will appear. Uncover two of the same colors and they will stay open, making it a memory-like game. Open all oxydstones to solve a landscape.