Really like this game's sound effects, first off - I found both the clicking sounds of the keyboard and destroying an enemy to be very satisfying to listen to. The colour-coding of the keyboard is also a nice touch that helps make what's going on be nice and readable. The day-night cycle gave me a chuckle when I noticed it and I liked the change in music that came with it, too! Gameplay is simple and fun, the idea is a neat and original one, just a great game. Nice work! :D