Alright, played Nightclub and I think I've gotten enough of a gist of how it works. Goal is the same of surviving with no additional objectives. I don't confidently remember the names of each gal so bear with me here. Not 100% sure how this works but I think I've got it mostly correct at worst.
-- You'll find yourself inside the Security Room. While we'll go over the specific details of the mechanics here last, just know that you can look left (er, middle?) and right. In front of you is your plushy, bright light of various colors behind a screen and a panel with buttons that have matching colors of the light. Move your mouse to the right side of the screen and you'll spot a suspicious vent beside a door. Open cameras/map by clicking [return] at the bottom of the screen. In order to return TO the Security Room from the map, click on it between Hallway C and "?" as right-clicking doesn't work here for some reason.
-- On the note of Hallways, let's start first by talking about the five of them and the Roof. Every one of them can be visited by Poppi who is now brandishing an axe presumably to give you a free circumcision if you haven't had one yet. Tagging along with her is Sammy, though she prefers to stay hidden.
When you hear her calling you a naughty boy, find her as soon as you can as she'll be tampering with a machine located in each one area to set them on fire. Once you catch her red-handed, play a sound (button on the bottom right of the screen) to spook her. As for Poppi, she's simply an indicator. If you let Sammy sabotage every area, Poppi will go ahead and mount you. Thankfully, without using her axe.
-- Then you have the Vault Hatch, located to the left of the Love Tunnel and above a button that says 'Rotate Vents'. There's someone (Cass the cowgirl? Guessing from the names of the tape videos sent by someone couple of posts ago) lurking in the vents as indicated by the circle. Rotate the vent to keep Cass away from the line. I initially kept it beside the circle, thinking of it as a wall, only to wind up reading a newspaper for the Game Over after a brief frame of what I can only assume is Cass taking you to a rodeo with you as her mount. You can only rotate in one direction but don't worry about that since Cass doesn't breakthrough if it would've touched her.
-- Now let's return back to the Security Room. You'll notice a bar at the top of your screen at all times no matter where you're looking. This is for (who I assume to be) Misty. She's giving a performance inside the Dance Hall and as far as I know there's no need to view this area, not yet anyway. When the bar starts decreasing, immediately return to the Security Room and click one of the buttons in the middle to match the color of the windows/screen. Failure to do so will result in a game over as a most likely result of her getting upset and giving you a private performance with her jaws chomping down the little boat between your legs.
-- EDIT: Intentionally tried to get Nile and Matty to clobber me after leaving them both hanging. They just kinda leave without doing anything, so it's most likely an incomplete feature for the time being.
Last, but not the least, are Nile and the new girl Matty whose got a big pair of fatty on her. Both will be visible through the vent to your right. To let either in, simply click the glowing yellow doorknob. For Matty, taking her order (assuming yes = pink) and Close Ad, that's about it and you will score a tape the first time around. Refusing her order does nothing but will presumably penalize you later on. As for Nile, simply rub her head for the good girl. Failure to do so will most likely result in her rubbing your heads.
