The first thing that hits you is the nun. Not in a metaphorical way, she's just there, habit barely containing the kind of curves that would make a cardinal renounce his vows. This is Succubus Realm, a game that knows exactly what it is and doesn't bother with pretense. The 3DCG is deliberately unpolished, like someone rendered it on a potato and said "good enough," but honestly? It adds to the charm. You wake up in some demon lady's domain and immediately get to choose your flavor of corruption. The big tits are everywhere, and I mean that as a factual statement, not a complaint.
Gameplay wise it's your standard choice driven hentai affair. Click, read, get hard, repeat. There's a scene with a sexy nun that I kept coming back to, something about the way the light hits her ass, or maybe it was just the sheer absurdity of the situation. The succubus herself has that monster girl energy, horns and tail and a rack that defies physics. I wish there was more actual demon lore instead of just "here's a hot demon, now bang," but then again I'm not here for a theology lesson. The male protagonist is as bland as unbuttered toast, which is probably intentional so you can project yourself onto him, but come on, give the guy a personality trait beyond "has penis."
Oh, and the multi lover endings. That's where this thing shines. Most harem games chicken out and make you pick one girl, but here you can have your nun and your succubus too. The CG hentai scenes are static but detailed enough to get the job done, though I found myself clicking through some of the longer text dumps just to get to the next big boobs shot. There's a moment where you're in the succubus's chamber and she's doing that thing with her tail, and I won't spoil it but let's just say I needed a cold shower after. The game doesn't pretend to be high art, it's a fap delivery system with a fantasy skin, and on that front it delivers. I just wish the nuns had more screen time. Or maybe I don't, because then I'd never leave my chair.