I felt a fuzzy warm glow playing this game. Was it the radiation coming from the imginary CRT monitor? No, it's because as a Linux user this command line interface makes me feel right a home! To be honest, I wasn't able to invest enough time to get into the puzzles, but I very much enjoyed the visuals and exploring the mini command language you've created; it's so succint and clearly explained that it actually puts real command line systems to shame. The only minor wishlist item would be shortcuts for commands, e.g. just type 'h' to help, "_h" for advanced help, or 'l' for list, etc. But that's just piddling stuff. Great work!