I will admit that I am not a fan of chiptune stuff in general because I tend to find it quite grating and irritating, haha, but that is absolutely not the case here :3 This might actually be the only OST I've ever heard with chiptune stuff on where I genuinely enjoyed listening to the tracks!! Since I lack technical knowledge, I don't know what you did to achieve the sound, but I like it :D haha.
My personal favourites were Legend of Xara, Inside Her World, and The Director.
I also love the game idea in general, and the variation in the tracks fits the different worlds/areas perfectly, giving each a distinct flavour :3