From what the video showed, it seems that some of the interaction in the game actually involves modifying or copying the "graphics" in the center window (to cle

From what the video showed, it seems that some of the interaction in the game actually involves modifying or copying the "graphics" in the center window (to clean a window, or obtain an object for example). So it seems that he actually really developed this dynamic quite a lot. It really makes me want to play.