Fetish Locator
Outside of the other games already mentioned in the thread (especially Eruption Imminent, Burned, WVM, Neko Paradise, Fetish Locator and Having a Hard Time), I also like the following games with futa/trap content:
Family Affair (trans)
Confusion (trans)
Midlife Crisis (trans)
My New Memories (trans)
The Shrink (trans, especially if you can find the old version, don't really like the reboot/revamp so far)
The Writer's Visit (trans, ugly models but enjoyable)
City of Broken Dreamers Book 1 (it has the trans tag, but can't remember any trans characters in it. I did love the story though)
Panacea (transformation futa)
Lust Academy (trans, highly recommend season 1, season 2 is a letdown imo)