First of all: the quality of the game is very high. I'm sure that can be compared to a commercial product. Such solid and substantial plot is very uncommon today, in which too many developers waste time writing "infinite platformers" or "crazy clickers" games.
So, bravo Jack Le Hamster! :)
BTW I haven't yet added my comment at newground (I want beat the game, first. But at the moment I'm stuck), but obviously 5 stars are guaranteed.