I keep seeing this pop up so I finally gave it a go. I got some mild enjoyment out of Fap Queen and that original Fap Hero video with the intermittent dialogue popups from the succubus, reviews seemed to say this was a much more in-depth execution of something like that...
Positives: the model looks nice and has some good poses, customisation is impressive
Negatives: I tried to go in with an open mind but really I think the game is not targeted at me, most of the orders are non-sexual. So even with an attractive jpeg on the screen telling me to do it, doing 30 pushups followed by 20 seconds of "massaging your balls" followed by 2 minutes of pushups followed by writing a phrase on a piece of paper 20x is just not a turn on for me, it's tedious. Same for writing a phrase on a piece of paper 20 times. In general once it started giving instructions relating to condoms and permanent markers they were just too much and i didn't bother anymore, i was expecting less extreme requests than "put on condoms until you can't feel your dick" or "write an entire phrase in permanent marker on your wrist" (on that note, 2 minutes of continuous pushups also is kind of insane for an impromptu task). Refusing anything plunges the mood from ecstatic to furious and immediately results in a bunch of other stuff you presumably also won't want to do if you refused anything in the first place.
I guess what I expected was: smug succubus tells you to look at her ass/tits/face and jack off slow/fast/loosely/stop, and some bonuses for people who want to enable them for stuff like toys/anal/etc. Instead I got 45+ minutes of almost completely non-sexual instructions followed by a few minutes of "great stuff, now jack off" - I'm sure there are plenty of people who are into the "following orders" fetish even for non-sexual orders enough to enjoy the whole game but it didn't do much for me.
So, negative review here, but I think I'm just not the target audience. If there is a combination of settings that massively limits the volume of exercises, 20x task repetitions, severity of requests, etc, and makes it more of a purely JOI focused thing rather than 15% JOI + 85% servitude fetish, I would probably give it another go, but I dunno if that exists