Feels great; nice and simplistic, though it would have been nice if the core mechanic was developed a little as the game progressed. Graphically it was very clear and close to gameboy restrictions, as well as giving everything a cute aesthetic. Only thing I would say is that the use of the mouse as the main means of control went against the gameboy restrictions, but not using the mouse would have meant sacrificing the gameplay, and it's clear that the right decision was made by putting the gameplay first :)