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Watch trailer on Steam ↗Flan's BN
Geism · Published by Geism, Nyads Games · Official site ↗
Very Positive — 98% positive (130 reviews)
Last updated 2 Oct 2026
《Flan's BN》is the prequel to 《Flan's MS》, which combines JRPG and deckbuilder mechanics. Experience Flan's story of self-discovery
£4.99
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Price history
Indie, Strategy · 2026 · More under £5 games
Delve into Flan's BN, where strategic decisions shape your RPG adventure. Craft a unique deck and navigate complex battles in an immersive story of personal growth.
About this game
《Flan's BN》is the prequel to 《Flan's MS》, which combines JRPG and deckbuilder mechanics. Experience Flan's story of self-discovery.


It all happened before the Scarlet Mist Incident.
The girl came in and out of library in her activity time.
She had read countless books over hundreds of years.
Recently , she came up with a question,
"Who am 'I' ?", she asked herself.
With this question, she decided to write a story about herself.
Maybe she will find the answer…

The game has four chapters and playthrough time of more than five hours.
Gameplay consists of two parts: Activity Time and Bedtime Story.
Activity Time:
Every night, you can explore Scarlet Devil Mansion. Try to find new books, friends and special cards. Also, you may have a chance to uncover the hidden truth of this mystery vampire mansion.
Bedtime Story:
Inside the worlds of each book, you can meet different friends, choose your cards freely for battles and experience amazing stories with your friends.

Unique pixel art
Build your team and card deck freely
Free exploration of Scarlet Devil Mansion
Entertaining adaptations of classic literature works
Special Note:
As with the previous title, this series will offer a free version in the future that differs from the Steam version. A free mobile port of this installment is also under consideration.
About Geism:
A portion of the revenue will be allocated to charitable causes, and both the game's income and development expenses will be made public.
This is an individual project. Please approach it with appropriate discretion.
System Requirements
Will my PC run this? →Minimum
- Requires a 64-bit processor and operating system
- OS: Windows 10
- Processor: Intel Core i5-2300 | AMD FX-4350
- Memory: 4 GB RAM
- Graphics: Nvidia GeForce GTX 570
- Storage: 1 GB available space
Recommended
- Requires a 64-bit processor and operating system
Supported Languages
*languages with full audio support
Latest news
AnnouncementsOfficial
Rogue mode dev progress
1. Roguelike Mode Progress Update:1.I’ve finished making around 100 cards add in the roguelike mode. The pool now includes Blood cards and Dice-summoning cards. Since the mode uses post-battle random card packs, it leans into the game’s original “build-your-own-deck freely” style.2.The main event pool for the roguelike mode is mostly done, with about 40 events. I’ve also added a few lightweight meta-unlock event packs. (The mode works by randomly pulling combat and non-combat events from the main framework, so unlocking more event packs increases the overall pool.)3.Relics are done, along with the special post-boss reward cards—basically boss relics.praisesun4.Most of the art is finished, but I haven’t started working on enemy designs or their card logic yet. Especially for the story references to the official works—elites and bosses are all based on canon characters, so they’ll need some careful design.5.Event illustrations are still unfinished. There are just too many, and I can’t keep up with drawing them all right now—I’ve been busy with some other cool stuff lately.2. What I’ve Been Busy With Recently: deepseek v4 & Future “Sumireko Urban Legends”So what have I been doing? Basically, since DeepSeek v4 is pretty cheap, I’ve been learning how to use AI these days.ːceleste_grannyːFor next year’s free game, Sumireko’s Urban Legends(or other name whatever, u know i mean:D), I’m planning to use AI for part of the content. Don’t worry—it’ll be free. A few days before release, I’ll share some API keys so everyone can try it out. I’ll also try to design a system that doesn’t require too many tokens but still delivers decent results as part of the gameplay experience. i will tryːPEAKsobː3. SummarySo yeah, I’m going to take my time with the roguelike mode. I don’t want it to just be a quick expansion and call it done—I’d rather put in the effort and make it something solid. Maybe I can get it out as a free update by the end of the year.That said, I’ve also got a new proje...Read full article on Community Announcements (字母桑ww)Patch NotesOfficial
Minor Update Patch 1.1.0 – Korean Localization Implemented
After the intense bug-fixing marathon of our first week (There were simply too many bugs fixed to list them all individually — please forgive us!)We’re thrilled to bring the game to even more players around the world! Korean localization is now live with version 1.1.0. If you encounter any issues while playing, please feel free to reach out to us through our official community channels.We’ve also listened to player feedback and made some adjustments: slightly increasing difficulty in certain areas while adding extra difficulty options for better accessibility.Looking ahead, our next goals are to release Russian localization and introduce a brand-new free DLC game mode. We expect to launch it within the next two months. This mode will feature a roguelike-style Normal Mode.Of course, given our current team capacity, this new mode will be a supplementary experience rather than a large-scale content addition.Thank you for your continued support! We love you all! Thank you so much for playing our game!Read full article on Community Announcements (Nyads)AnnouncementsOfficial
Full Release! Join Us for Feedback & Chat
From the very first version of the Demo going live, you’ve already been through so much…If you run into any bugs while playing, or if you simply want to chat with fellow players, you’re always welcome to join our official communities:QQ Group: 361794160Discord: Flan's BNSpecial NoticeWe’re still working at full speed to track down and fix any bugs that could affect the normal progression of the game. For the sake of your experience, we strongly recommend that you manually save during intermission / downtime sections where the game does not autosave, so you don’t lose progress if a severe bug strikes.(Trust me—I once firmly believed “there’s absolutely no way this scene still has a bug,” so I confidently went in without saving. Then, somehow, a bug that was supposedly fixed got mysteriously affected by another bug fix, and I ended up softlocked again in a special sequence. I had to force quit the game and sadly lost a few minutes of exploration progress. It’s… really frustrating.)Thanks to the incredible help from community contributors, we’ve been able to complete multi-language localization for the game.At the moment, Chinese / Japanese / English localization is basically complete, and you can enjoy the full game experience in these languages.Korean / Russian localization is also being worked on intensively. (You might already be able to select these options in-game, but they are not yet complete enough to support a full playthrough.)We’re truly, genuinely excited to share the game we’ve been making with you.Thank you—for choosing to play our game.Easter EggWe strongly recommend that you do not use any narrator voice other than Japanese.(The Chinese narration was voiced by our “slacking-off producer” who is also the behind-the-scenes BOSS. This is yet another glorious victory of our small team successfully “bullying” the boss internally. He only did it because he lost a bet with us— and thanks to that, we learned once again just how powerful professional voice acto...Read full article on Community Announcements (Nyads)Patch NotesOfficial
Small Update Fixes – v0.9.2
Heads-up: To share our latest progress with you sooner, the English version of this update uses automated translation. It’s provided for reference only—thanks for your understanding if anything reads a bit off.Based on feedback from our early playtesters, we were able to identify and fix the following issues.(If you’d like to join our official feedback & discussion groups, please see the social group info below.)QQ Group: 361794160 Discord: DiscordBug Fixes / DefectsAfter using “Ripple of Year 495”, the draw/discard pile data could occasionally become abnormal.In certain cases, cards in hand could fail to move into the discard pile or draw pile. (Currently, when drawing with a full card limit, cards will be sent to the discard pile. When the card limit is reached, card creation via Quick Pouch and the Create Card feature may become unavailable.)Crystals could still appear in the inventory when the amount was 0.In menus, some buttons could remain highlighted across menu pages and wouldn’t clear until the mouse hovered over the corresponding UI element.Monster intent display could behave incorrectly in some scenes, including interactions involving buffering/shields.Incorrect text description for Team Barrier.Quick play (number-key card selection) could fail in some scenarios.After Chapter 1 ends, entering the basement could trigger the first-entry cutscene; after making a dialogue choice, the exit interaction on the left could disappear—leaving the player stuck for “495 years.” (Severe: can permanently trap the player.)When starting a new battle, the previous battle’s monster name could briefly appear until hovering over a target refreshed it.For Grem Tentacle, when Limb Rupture was fully blocked, the damage display could show an incorrect value instead of 0.The Bleed effect applied by Grem Tentacle could, in certain cases, fail to be properly cleared by Mystic Potion.When a monster had both single-target and AoE attacks, damage numbers could display incorrectly.Damag...Read full article on Community Announcements (Nyads)Patch NotesOfficial
Patch.25.6.00
Sry, because happened some network errors today, the net was just restored.(Forgive my noob en,the patch recode is a big challage for me)the addition and modification:1.Add the KR version (still have A little text bugs).2.Add the fast save point in the chapter.1.3.Modify the auto resolution apply in code and add the part of set resolution.4.Increase the running speed by 10% in chapter.1 and change the animation speed.the fixed bugs:1.In the controller logic.When staying the fast healing area,the tip will still exit if close or change bag.2.In the controller logic.When card select targets,maybe the quickly select will get a dead target.3.In the controller logic.When close or change bag,the bag class will not conform to vision.4.In the controller logic.In battle,if u open the stack and do save part,will cant close stack.5.Remove that auto select frist card after controller use one card.6.Fixed skill's energy counter of \ will keep until next battle.7.Fixed some shader bug of Chapter.1.8.Fixed \ have some possibility of use failure.9.Fixed the deep mine's stone gate did not require gem.10.Fixed enter the grim room,have some possibility of healing failure.11.Fixed the CD player can't be correctly open in battle.12.Increase the speed of open bag, change the battle failure's UI postion(I think the en patch notice have more bugs)ːrbrb3ːRead full article on Community Announcements (字母桑(zZZ)






