I've tried looking for it using tags for about 3 days now and I can't take it anymore.
It's a flash game, it was made somewhat recently, I think in the last few months, it's a 2d text-based game where you explore planets and have sexual encounters with all sorts of creatures. Different planets all have the same setup, there's a town, and then wilds where you can either battle creatures or fuck them.
I have a very distinct (and fond) memory of there being goo-girls. Lots of goo-girls.
I hope this is enough information to go off of.
Updated by TheGreatWolfgang