I suppose my main fetish is futa domination. So far the only games that (I know of) have that fetish is Tales of Androgyny and
Futadom World. The latter is, mind you a great game with fantastic updates, has probably one of the worst release schedules I've seen. I imagine most people who enjoy this game would enjoy Futadom World as the themes are similar as if you were playing Tales of Androgyny as a submissive slut; albeit maybe a little more on the sadistic side...
Aside from those, while not a fetish, what I mostly like seeing from a game is character interactions. You can see on my signature two games being
Harem Hotel and
Mythic Manor. Both games have heavy character focus and how they interact with both the player and with each other.
So basically I have a penchant for erotic reading and futanari so that probably explains everything you need to know about what I like.
The only thing I've yet to see is a game where you play as a female protagonist with futas being a main focus, similar to this game or Futadom World. I dream for it, but I feel like I will eventually get desperate enough to bite the bullet and make one my own. Who knows?