Pretty good game. Not a big fan of the forced lesbian stuff, even less a fan of some of it happening behind the Mc's back, and I really hate when the Mc unilaterally decides that "lesbians hawt," because it puts a disconnect between the Mc and me (since I find lesbian stuff in general boring at best, and if it happens without my knowledge and consent cheating at worst). Especially when there have been lots of other times when I got to make choices for him, such as at the end with the anal which I also don't care for. Overall it's a good premise with nice twists and enough mystery to keep it interesting without dragging it out like some other "mystery" AVNs out there. Some of my thoughts about the twists and plot: the nieces being the Mc's daughters was obvious from the get go, having dau-niece twins was a nice addition, big clue for that when Jen said that line about how "mom raised us..." even before seeing her in two places on the monitors and having Megan slip and use the name Jess. From the clues it seems like Jen, Jess, and Megan are the main people doing the box "game." It's possible that Lydia is in on it too (though it seems genuine when she confessed to Jen that she was the Mc's daughter even though I assume the twins knew it even if Lydia never told them before), seeing as how she hasn't mentioned the second daughter so far, so it's possible that all the women are involved. Lydia and Sam could have started the plan with the older girls back when she first arrived and it could all be an elaborate birthday prank even. Though I would doubt the two youngest daughter knew about it, even though they likely do by now and by this point I'd bet all the women are involved even if they weren't all in the know at the start. It would be funny if the final room of the box maze is a big birthday party with a cake and stuff.
All that to say that pretty much the only think docking points off this is the forced lesbian stuff, most of all the line about Lydia and Sam doing stuff while separated from the Mc. Wish that line wasn't there, I don't think it adds anything especially when, during the scene when you're with the two of them, they both say they aren't even into girls, and the whole thing seems to be a set up to get the Mc to do sexual stuff so why would they be forced to do things when he isn't around. It's the "every woman is secretly bisexual" porn troupe, which I dislike, and also borderline -three letter content- if stuff behind the Mc's back goes too far. So that would be my constructive critique, make it optional like the anal, going forward at least if you can't or won't do it to the existing scenes, and remove the lines about them doing stuff without the Mc around all together.