The object of the game is to assemble molecules from compound atoms by sliding the atoms around. This has to be done in a set time limit for each level. The screen contains a small preview window showing what each molecule should look like. The tile-based playing field contains a number of atom blocks, as well as walls. You can move an atom around by selecting it, and moving it up, down, left, or right.
Use mouse / arrow keys / AWSD to move atoms P: Pause M: Music on/off F: Fx on/off Esc: Abort game