Wow, thank you very much for the rare 3d game here! :) And for the working mac build as well! The presentation with all the characters, shaders and camera is just great. I like it a lot, the main mechanics feels a bit monotonous though. I understand the time limitations, it's just some piece of advice for future maybe. You could let the character switch between several columns, maybe give him some powerups... Anyway, the game is really good :) Congrats on that!