I've had a fair amount of dumb fun with this one.
https://m87124games.itch.io/swas
Not even a giantessfag or a vorefag, I just think the basic premise is fun and it manages to be genuinely fucking scary sometimes despite the succubus' character design being the least intimidating thing ever. It can be a bit furstrating however. Admittedly I don't think it really counts as an H-game despite the nudity option.