Lovely reaction genre game. The problem with this game is, that the variety of the keys is way too big there should be onyl like 4-5 to choose from, so the difficuly is pretty hard. Still a nice game with lovely graphics and audio.
If there was a lower variety of keys I think the game would become a bit tedious, most people actually find the game quite easy and most of the time the game is forgiving with the amount of time you have to press a key : )