Yes, these are pretty much all fetish games done in older versions of RPGMaker, so spotty or nonexistent mouse/controller support. Also, for those who are accustomed to more...pneumatic sex scenes, most of the erotic content here is going to be corruption and transformation - the typical playstyle is that the player will either be a cute girl trying to "avoid" being seduced by a monster/demon/alien and turned into a hypersexual evil sex fiend, or said sex fiend trying to hunt and corrupt innocent girls. The dialogue can get fairly hot, mostly describing the pleasures to be had when the victim just submits and joins Team Evil, but for those wanting visual sex scenes, maybe give this a miss (keep in mind, the characters definitely get laid; it's just not shown in pornographic detail).
If anyone downloaded the VampYou game collection after that site went dark, it's an expanded selection of tropes very much in the same vein (the artist is also the same artist from the VampYou collection). I like the games; I just like them more when playing a new one every three months or so rather than one after the other.