30 Days with My School-Refusing Sister
by Eroflashclub
VersionSteam
EngineUnity
Released2024-11-14
Updated2026-04-09
LanguageEnglish, Japanese, Korean, Chinese
2DCG
Animated
Bukkake
Creampie
Incest
Internal View
Japanese Game
Male Protagonist
Point & Click
Pregnancy
Rape
Simulator
Sleep Sex
Vaginal Sex
Your truant younger sister decided to crash at your place. Improve your relationship by spending time with her while balancing your job as an illustrator. Give her a head pat, cook for her, have a chat, and maybe, over time, she'll open up to you.
Screenshots
I want to find some redeeming qualities to this game, but it's hard. Gameplay is pretty boring and repetitive, there's no story and like a grand total of 3 ways of interacting with your sis. Your actions barely register by the heroine and pregnancy doesn't seem to affect anything, except statistical screen. You see almost no visible progress in the relationship, sleep gauge is just there to annoy you \sister doesn't wake up even if you fill the sleep gauge a million times and will keep her poker face at all times. If you're questioning whether to play this game - don't.
Underbaked game When I started it up, there was just some quick text that said: 'Peter,the Sister is here' and that was the intro. After that the gameplay loop began, click the draw button, then the rest button, sometimes the shop button. Simple, but extremely tiring once you do that for more than 7 days. The sister content wasn't really good in here too. You can talk to her and pat her head, but thats it. You can't join her in the shower nor invite her on some dates outside or play any games with her or anything, because those activities don't exist. In terms of the sex part, that one was pretty nicely made, you can remove her clothing, move her legs, kiss her and the art also looks nice. However it falls off, mainly because of the gauges: one for pleasing the sister and one for her alertness. The pleasing gauge moves sooo slowly on the base level, that you will be overjoyed if it even hits 50% The alertness one is basically useless. Once it fills up it doesnt wake up the sister but decreases the pleasing gauge and stops you from doing anything with the sister in that state for a short while. I think that it's a shame that she has no possibility of waking up to your hijinks. There is also no pregnancy ending, which is strange, especially if you fill her to the brim. In conclusion, don't play this game, because it is pretty monotonous, (it also doesn't have any music) that i advise you to play other games that do the living aspect well. It's a shame that this game was bad, because I really liked the sister's design....
I wouldn't call it bad, it's just Lite version of Sister Fantasy: Monochrome sex mechanic. I know that game stand out by using grayscale color theme, but there has to be a crime making an entire world pale white on the get-go. This game arguably "fix" most complain from that game by: Making Sister sleep forever Pregnancy's doesn't lock you to an ending Action that loop And able to set extra time for night activity instead awaken by access hormone But only comparing the two wouldn't be fair, the game does some world building and mechanic that I like, for example every job request each have unique title and thankyou comment while the H-content has progression record and sex scene can triggers different action by swiping or combining command is a small detail I appreciate. Honestly, play the game if you want to post your playthrough highscore/result, like: "I got her pregnant on day XO"
Okay, quick review of yet another cohabitation game, featuring big bro and his lil sis. They will eventually fuck, as is ordained by God, because apparently all in-game bros are created solely to please their sisters, or the other way around. Let's call a spade a spade. This game basically apes its infinitely better, and more successful cousin, all the way down to 2/3s of the game's name. Not a very good imitation because its so barebones, you can be forgiven for believing that it might still be in alpha dev. It has virtually zero complexity, and the rules of the game is about as remote to real life as the earth is to sky. To illustrate this, the story starts by having your sister visit your house, you take her in and that's it. No calls to mom, or even the most pathetically written note of why shes here and why youre putting up with this. Self evident reasons simply requires you to accept it or close the game and play something else. Normal gameplay consist of you managing your stamina to work and interact with your sis to raise her trust/affection but it'll quickly become evident that even this doesnt really matter. What does matter is actually the rationality meter, which dictates what you can or cannot do to your sister. So while you cannot technically penetrate her on day 1, youre not really obliged to raise her trust/affection to do it neither. Not that it matters anyway because both those stat raise itself automatically every day at only the very slightest inconvenience to your actions. So what about the H gameplay? Well, youre invited to grope her at night, trying not to wake her up as you do so. But to wake her up would basically require a nuclear explosion to happen because this lil sis sleeps like shes been drugged up with a kilo of ketamine. Not that it matters because the consequences of waking her up barely registers as a fail state. There's not much variety to keep you going, you cant even fuck her sideways or go doggy doggy, its just one pose and you'll do it to her over and over or you can close the game and sit in a corner. In Conclusion... Its not especially well made, nor is there much meat in the H that recommending this even to fullproof sis con lovers is difficult. Cant even appropriately label this as a case of forbidden love because canonically your sister is always unaware of what youre doing, even as she masturbates to your name every day, big bro just never thought of doing this to his lil sis while shes actually awake. I suppose if we're straining for positives, the only thing going for it is that it does have appropriate pacing, and for what its worth, there is significant character growth, the only niche it has over its betters. Play it because you have 2 hours to spare. Just dont go round comparing it to the other monochromatic sister game that was developed a decade ago and is somehow still superior to this in just about every aspect that matters.
It's an OKAY game. Short, could probably finish it in one sitting in less than three hours. The scenes are mediocre, no animation unless if you think slide shows are one. I recommend, just don't have high expectations.
Basically this is Monochrome Imouto (is this a genre now? Monochrome-like? I'll stick with that) that puts on training wheels for her not waking up in exchange for...her never being awake for sex. Meaning you can basically train her body to orgasm by whispering in her ear and she'll treat you as if you've been chaste. She masturbates twice daily? She might as well be a nun. Maybe you'll fluke into the conditions to make her actually suck instead of lick your dick. That's a neat little..easter egg? But we're not here for easter eggs. I think the monochrome-like genre is great. It's about two people gradually melting the barrier between siblings with you doing things ranging from being nice enough to making her horny enough finally you get that one moment where you break the taboo. The entire game is centered around this. After the taboo breaking, you have basically a succubus under your roof and if the game just flat out ended with "you banged her until you died of dehydration" it wouldn't be a GREAT ending, but you'd still come away feeling like you got what you came into a Monochrome-like for. This game has a difficulty slider for how easily she can wake up because that's the loop. It doesn't matter what you do to her. The best the game can give you is that she'll masturbate saying your name. So I'll give it 3 stars. It's functional enough to be scored higher than a 2, but misses the entire point so it's hard to give it any credit beyond the bare minimum. The 3 stars says more about me not wanting to give a game that technically works less than 3 stars than it does about the game.
Hello, I finished this game, and here are my thoughts: Pros: - A cool monochrome art style - I like the sister design. - The point-and-click mechanic is quite good. cons - Not a lot of variety -short -Daily activites are very boring - You can only work, rest, or talk with your sister. No story - Sister doesn't talk much, only repeats two phrases. Have a great day, lads. :3
Another touching simulator, this time brother gropes his sleeping sister. PROS: + Simply drawn but really cute graphics. + Nice interactive touching that more or less changes depending on purchased upgrades, stats, days passed, times cummed in row etc. CONS: - Partialy censored. - Poor audio. - Not that many scenes and options, daytimes are pretty boring and grindy when it comes to getting money. - Ending is always the same no matter the progress made. Or if there's some hidden ending I don't know about it must be extremely grindy to get. As far as touching games goes this one is really nice made. Maybe small and far from perfect but still great. I wish 3D sandboxes could have such mechanics.
If I had a nickel for every monochromatic imouto simulator I played, i'd have two nickels. 30 Days is a bare-bones somnophilia incest game that is just fine at what it does. Grind for money to get upgrades to make your sleep assaults easier. No real story and no real consequences. Goes to show how a little bit of pizzazz really makes a game worth it. Add in a fail state, more than 1 ending, or even some costumes and this would be A++. However, as it is, it's a 3/5
3.5/5 Liked the art quite a bit, and it's the only thing carrying this game for me. Plain and simple game that follows the typical sister-screwing-at-night, work-some-weird-job formula in a boring way. A little grindy for my liking. Not much story or development, really. Ending left a very bad taste in my mouth. Was so inconclusive and dissatisfying.
Barely Recommended – 5.5/10 Mouse only Summary Length: 3-5 Hours Experience: increase relationship, buy things, train her at night Cute but meh Story: 2/5 Sister doesnt want to go to school so just stays at your home Gameplay: 3/5 Trainer style, but unnecessarily grindy Originality: 2/5 Scenes: 2.5/5 Two types, both interactive but still quite boring Environments & Undertone: 2.5/5 Kinda cozy ig Amount of Content: 2/5 Not a lot of stuff going on or to do, barely works as a whole Characters: 3/5 MC is cute Performance & TL: 5/5 <3
It is worth a partial play, but it's lacks any real choice or branching paths other games like this have included. It's a typical earn-money-while-squeezing-in-horny-tasks management game, but you're limited to a menial grind, alongside time-gated sleep-sex options. I was disappointed to find there are zero alternate events to be found through your choices as you play, which makes it a one-and-done. I won't say which, but there are several other games almost idential in premise to this that take into account the basic bad choices, and created rewards for patience and playing well or towards a specific outcome. What happens if you wake her up? Nothing. Even on the hard difficulty, which it claims is for "those who want a trill", there's no bad end for waking her up. What if you min-max your activites to increase her Trust/Love? She eventually accepts headpats, and asks for homework help. It tracks her "safe days". What happens if you forget a condom when it's not safe? Absolutely nothing. At the end of the 30 days, she goes home, and nothing is mentioned about a pregnancy at all. The art is cute , but the gameplay gets repetative quickly.
It's kinda basic and simple, doesn't go beyond the nightlies, ends by her simply going back home but man I liked this one. She's cute and says enough with words and body language to convey what's necessary to grow on me. If they make a larger project, given how this ended out, they'll have a 5/5 on their hands. For other developing - writing - artisting types I recommend it too.
The game is okay. Straight to the point with no soap opera drama. Biggest downside, there's only one "coitus" style provided in the game, a missionary at night & vaginal cunnilingus only at the afternoon, for the whole 30-days. A single constant repetitive colorless missionary sex - for the whole month... kinda nightmare-ish, if you think about it . The simulation mechanics is okay too, easy to understand. For a 10 minute game, this one is okay.
There's a certain other dev that makes similar monochrome games, so I thought it was a new one of his at first. If I were to compare the two, I'd say this one feels like a prototype for that series. This one's not very immersive, and even the main gimmick (sleep sex) feels kind of lackluster. It goes straight into the "play once and never again" category.
Ok game, very cute girl, I just wish there was a way to wake her up to get some more reactions or change her position a bit more. Kinda reminds me of Imouto! Life Monochrome the prequel to Imouto Seikatsu ~Fantasy~. I hope but doubt they will go the same route of having this just be the first draft and the next one is an expanded version.
Not bad, It has enough content to keep you entertained for a decent session but it does get repetitive. Would be nice to have a few new methods of play and maybe a situation where the sister wakes up for the interaction.
30 Days with My School-Refusing Sister I'm going to give the game a better rating than I think it deserves because I love this genre! Let me start with some good things: We've got beautiful pen-drawn graphics. Quick progression. You don't have to wait long till you can do everything that is in the game. Grind feels less annoying than in similar games. The bad things: The game feels kind of empty; there is basically no interaction with your sister during the day. There aren't many items that you can buy. During the night, there is only one sex position. During the day, while fondling, you can only masturbate. “Vanilla” things are missing, like handjob, boobjob and anal. I've played Eroflashclubs other games, and this one is the best so far. It does feel kind of empty, though. Overall, I'd say it's good enough for you to give it a shot, but you're also not missing out on anything!
This was a decent game. It had a good progression system even if it was limited and highly repetitive. Honestly my only complaint is it felt like there was no ending (or at least how to make an ending wasnt apparent), and the grind got boring around day 19 or so.
30 Days with My School-Refusing Sister [Final] [Eroflashclub] Promoted only for the daily atmosphere. Even though it is very limited as a game, I particularly liked the day to see the sister's behavior developed. Surely boring after a while and the fact of not being able to skip the time at will penalizes it a lot (you have to wait a certain amount of time for each action). 2.5/5
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