Perpetual Change! It's so much fun and has a great engaging story! I've played and completed it numerous times! There's 4 chapters so far, I can't wait for the 5th and most likely final chapter! It uses a similar play engine to the Pokemon games on GameBoy and features wonderful Anime style ABDL art (this is coming from someone who hates anime but is willing to make exceptions) so, you know it's gotta be good enough for me to make an exception!