This game wasn't half bad, the music was alright, the puzzles can be challenging, and it's hard, but not too hard. However the music can get a little repetitive after a while, and level 9 is way too hard for other players. Not that bad, but it can use a little bit of work.
Interesting but, not my type its hard at level 2
Very good! A bit too easy and short but fun.
Great game very challenging
I couldn't figure out how to solve level 9 without a walkthrough.
Simple binary->decimal conversion :)