I really enjoyed this game overall. I loved watching the hints gradually become more and more abstract as the game went on. The audio is totally serviceable, and the visuals are solid. As for gameplay, Level 8 was the highlight for me! Level 2 was definitely the weakest and I think it was rather cheap. I love the concept behind Level 7, I think it was executed poorly however as there were numerous combinations that I came up with that made perfect sense but ended up being incorrect. I've also been unable to make sense of the game's final two levels and so I cannot review them.
Also I wish I could adjust the sensitivity, I ended up needing to turn my mouse's DPI down to the lowest setting.