I rate it three stars for reasons I'll explain but what's there is 4 star quality.
This a fun two hour game right now. It doesn't beat around, no pun intended, you get shot right into the meat of the game and I think the art is better than average, I'm a big fan of the character designs.
My complaint, besides how there's only two hours of content right now, is how quickly this escalates. Look I know I'm a sick fuck playing an incest game but there needs to be that escalation, those multiple triggers, some progression. Normally it goes, mom sees what the boy's packing over multiple encounters, the boy's a little infatuated with her, they spend a lot of time together, the boy crosses the line, she's reluctant, but also super horny ... it's played out at this point but for a good reason, it's an immersive taboo story. Here within a few minutes of the game starting you're getting a handjob from your mom because you grabbed her butt, and the sister gives you a footjob because you play one not-Dungeons and Dragons game with her. It's missing a bunch of steps and build up.
That said, definitely worth checking out, just don't expect more than a fap session or two.