this is a great game!
the imp is extremely cute and nicely designed, and its growth is very cool!
i would recommend to add bigger sizes for the imp, more capacity upgrades, perhaps some more expansions for their belly/hips/butt area, to add a female imp too, etc etc.
this is a very enjoyable game, and i would definitely love to see more of it!
PS: the headpats were a great detail of the game (very cute), as well as the belly pats.
bravo, keep up the good work!