11 cat figurines. Inside one of them are diamonds — an inheritance revealed in a letter from your late aunt. Scattered across the hotel where she once worked, the figurines lead you to take an internship that opens the door to a world of secrets, intrigue, and temptation. But it doesn’t take long to realize — you’re not the only one searching.​

Isekai Brothel feels like someone cracked open my anime watchlist, dumped it on the bed, and said, “Ok, pick who you wanna fuck first.” It’s a dating sim wrapped around a brothel idea, but not the usual boring “pick one route, marry waifu, roll credits”. Here you jump between worlds and timelines, grab girls from different series, and basically run this horny multiverse where fidelity is a suggestion, not a rule. As a poly person this hits weirdly close to my fantasy: not needing to “pick best girl”, just stacking them like a chaotic harem Jenga tower and seeing what breaks first, your dick or your free time. And yeah, it’s messy. The art style and scenes don’t always match perfectly between girls, the transitions sometimes feel like someone hit the skip button too fast, but honestly that fits the vibe. It feels like a porn stash, not a museum.

What I liked a lot is how it leans hard into the “brothel” part without pretending to be moral about it. You flirt, you pay, you fuck. Sometimes you date first, sometimes you go straight to raw dog in a rented room. One moment I was having a kinda sweet “date” with a shy girl, choosing dialog options that made her open up, and then suddenly I was balls-deep while she begged me not to pull out. The jump from wholesome to filthy is fast and I actually enjoy that whiplash. There are quick sex scenes for when you just want a 2-minute stress relief, and longer dates where you build some tension before ruining her makeup. The game throws in fetishes pretty casually, like, “Oh, you clicked this girl again? Guess we’re doing anal now” and doesn’t over-explain anything. It trusts that if you’re on an adult site and recognize half these characters, you already know what you’re here for. One tiny thing that annoyed me: sometimes dialog sounds like it was translated twice through Google, then drunk-edited, but honestly I still liked that more than fake polished porn writing that nobody talks like.

The multiverse teleport tech is a cool excuse for why everyone is in one place, but the real fun is when you start mentally mixing “lore” from different shows while you’re mid-thrust. I was fucking a certain very proud, very stacked demon girl while thinking “if her boss from that other universe walked in right now, he’d probably applaud.” Then I switched to a sweet healer-type girl and went from rough choking and hair pulling to soft missionary and kissing like some kind of emotional whiplash speedrun. The game doesn’t punish you for jumping from girl to girl; it almost encourages it, like “you liked that dommy mommy? Nice, go cuddle the awkward schoolgirl now, coward.” It’s not trying to be classy, and I appreciate that a lot. Sex here can be romantic, sure, but it can also be just sloppy blowjob in a side room while other clients are busy in the back. I kinda wish there were more scenes where the girls interact with each other and not only with you, like full-on group sessions that acknowledge relationships between them, but at the same time I like the feeling that I’m sneaking from room to room, collecting different bodies and personalities like a horny little goblin. The whole thing feels like a guilty browser tab you forget to close, which is exactly how this kind of game should feel.

You’re this pretty average looking dude who somehow ends up running a weird cross‑universe safehouse that’s basically a horny refugee camp for ruined timelines. The game calls them “BIOLOGICAL OTHERWORLD ORGANISM BEINGS IN EXILE”, which is the most forced acronym I’ve seen in a porn game and also kind of genius, because everyone knows what it’s really about the moment those letters show up. Every girl that lands in your base comes from some smashed universe, so you’re not “kidnapping” anyone, you’re “saving” them. Very ethical, at least that’s what I kept telling myself while persuading a certain stretchy mom to try anal “for stress relief”. Zone Zero starts out almost empty, just a hub and a few basic rooms, then slowly turns into this stacked harem hotel where the hallways feel like Comic Con afterparty: Spider‑Gwen arguing with Jinx, Mavis sneaking around with that smug little grin, Ariel walking around like she forgot she’s not under water anymore and those tits need a bra. The game leans hard into parody without even pretending, so you’re flirting with heroines that are basically Marvel, Pixar, old school cartoons, fighting games, whoever, just with names shifted enough to not get lawyers screaming.

Moment to moment, it’s kind of a sandbox dating sim where you ping‑pong between rooms, chat up girls, pick dialogue options and unlock scenes when their affection and your corruption tricks line up. You can be sweet with some of them, actually play the romance angle, go on pseudo‑dates inside your base, help them “adapt” to this new life, which leads into long blowjob scenes or lazy morning vaginal sex where they pretend they’re still not part of your harem. Then there are paths where you lean straight into male domination and the game doesn’t pretend you’re a nice guy at all. There’s BDSM content that creeps in slowly: first a playful spanking on Mavis’ perfect goth ass, then she’s bent over your lap getting her pale cheeks red while she tries to keep her fangs from showing too much. A Spider‑verse girl ends up hogtied with your custom gear, gagged but still trying to talk shit. Some heroines react to tentacle stuff like it’s the most normal thing in the world, others freak out but moan anyway when you use one on their ass and another inside their pussy at the same time. Group sex scenes hit later, when your base starts feeling crowded and someone suggests a “team building” event that turns into a dogpile of Marvel butts, Street Fighter thighs and cartoon curves, with your character in the center trying not to bust too early while a redhead mermaid gives a messy boobjob and Jinx laughs in his face. There’s a lot of masturbation scenes too, caught through cameras or by just walking into the wrong room at the right moment, like Psylocke riding her own fingers while muttering about her lost world, or Helen Parr stretching in ways that would probably snap a normal woman’s spine, just to get the toy deeper. It’s not subtle, it’s not polished, and that’s kind of the charm: a messy, horny multiverse hotel where every corridor is one choice away from oral, anal, spanking, or some ridiculous crossover threesome featuring characters you grew up watching, now kneeling in front of you and calling you “owner” with a straight face.

You play as this sleazy “producer” who is basically one guy, a shitty studio room, a camera, and a line of girls from different anime worlds that, for some reason, all agree to audition for porn. It feels like some insane crossover fanfic that got drunk. One minute you’re trying not to stare directly at Mamako’s tits because they’re basically blocking the whole screen, next second you’re with Komi, who looks like she might die of embarrassment if you just say the word “blowjob” too loud. The whole thing is structured around these simple interview scenes where you click through dialogue, push the girl a bit, act like a fake professional, then end up balls deep anyway. It sounds boring written down, but the pacing is actually perfect for horny brain: short setup, a little teasing, then some proper filth. No huge open world, no fake “energy systems” like in those trash mobile gacha games, just “talk, push, fuck, repeat” and somehow it works.

The fun part for me is trying to squeeze out every single scene and pose like I’m doing a 100% run in some speedrun marathon. It’s not just “pick the top horny option and done”. Sometimes you pick the slightly nicer line, the girl opens up more later, and bam, suddenly you unlocked an extra position where she’s drooling on your cock and giving that full ahegao face that looks like her soul logged out of her body. With Wiz it’s hilarious, she starts all clumsy and shy, then when the scene actually starts she goes full-on eager throat destroyer, like some bug turned on and now she’s min-maxing your dick. Elma is pure food-obsessed dragon slut energy, half the interview is her talking about snacks, then the next frame you’re plowing her and her tits are bouncing all over, and you kind of forget what she was even saying. Albedo is exactly what you expect: super devoted, super horny, zero shame, calling you “master” in that smug way. And poor Sumi, she’s shy as hell, stuttering, but when you finally get her to wrap her lips around you, she’s shaking and trying her best, and it feels dirty in a very specific way, like you corrupted some mobile app moe mascot.

The sex itself is straightforward but it hits. You get the big asses, thick thighs, those ridiculous anime boobs that look like they broke physics, lots of focus on oral and riding, and plenty of facial expressions that scream “I can’t handle this monster cock but I also never want to stop.” There’s this moment with Mona where she’s half trying to stay composed, like she’s still the smug genius from her game, but the more you thrust, the more her eyes roll up and tongue slips out, and it’s just pure ahegao mess. The game doesn’t pretend to be classy. You’re here to watch famous waifus choke, moan, get filled, and say filthy lines while they’re getting their pussy pounded, and it delivers that in a very direct, unapologetic way. It feels like browsing random clips on Pornhub while also doing a weird little completionist challenge on the side, trying to see every variation, every angle, every time a girl goes from “no way” to “put it deeper, I want all of it” and you sit there like, yeah, this is exactly the kind of trash I signed up for.