Terrible game. Not really a game though. More like you make a schematic based on 4 grids that are 4×4. You grab molocules, drop them, bond them, rotate them to match what your inputs and outputs supposed to be to complete the level. This is not a fun game. A lot of staring at a black screen with red lines and blue lines. Youtube this. I bought it for theTF2 items and got the heck out. Never playing this again.