News Releases

December 17th, 2025
SmileBoom Co. Ltd.

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SmileBoom Co.Ltd.   The person in charge: Nobuki Nagai, Akari Tsuruta
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Programming-Free RPG Creation Tool for PC “RPG Developer Bakin”
 New Sample Game from Creator MAKOTO KEDOUIN
“REINES DU SABBAT Queen of Sacrifice.” Now Available!
Major Update Ver. 2.2 Released, Expanding Game Systems

December 17, 2025 - Sapporo, Japan – SmileBoom Co.Ltd. today announced the release of a new sample game titled “REINES DU SABBAT Queen of Sacrifice.,” created by game creator MAKOTO KEDOUIN using “RPG Developer Bakin” (read as "BAH-keen"; hereafter referred to as Bakin). To commemorate the release, an SNS giveaway campaign is being held in which participants can win Bakin and “REINES DU SABBAT Queen of Sacrifice.” merchandise.
In addition, we are pleased to announce the implementation of Major Update Ver. 2.2, which expands the range of game systems, including enhancements to the reserve member features.

“REINES DU SABBAT Queen of Sacrifice.” Now Available for Free!

The creator of the popular horror game “Corpse Party,” KEDOUIN, has released the new sample game “REINES DU SABBAT Queen of Sacrifice.,” created using Bakin, free of charge on the official website. Along with this release, the game project data and related assets for this title have been implemented into the Bakin itself at no additional cost.

“REINES DU SABBAT Queen of Sacrifice.” is a 3D & 2D fantasy-adventure game that reconstructs the prologue of KEDOUIN’s debut work “REINES DU SABBAT” using Bakin. While grappling with a “game creation tool capable of handling 3D” for the first time, KEDOUIN successfully built his distinctive worldview using the core features available up through today’s Update Ver. 2.2. Although the estimated playtime is about one hour, the game is packed with many elements that can serve as inspiration for game creation, including maps, events, characters, sound, and mini-games.
We hope that Bakin users will not only make use of the assets included in this game, but also draw inspiration from its world and scenario for their own creative projects.
Details on the production process of this sample game are also introduced on the development blog “Made with RPG Developer Bakin,” so please be sure to check it out as well.

■“REINES DU SABBAT Queen of Sacrifice.” Special Page

https://rpgbakin.com/en/products/reines-du-sabbat-queen-of-sacrifice/

■ “REINES DU SABBAT” Development Blog: Made with RPG Developer Bakin

https://rpgbakin.com/en/blog/made-with-bakin/

■ Message from Chief Director Mr. KEDOUIN

This project—“to create an interesting sample game within a limited timeframe using RPG Developer Bakin to its fullest”—has now been successfully completed.

This title is not a direct port of the original work, but a brand-new story that shares the same world and setting. I have poured a tremendous amount of care and passion into it, hoping that both newcomers and those who feel a sense of nostalgia will enjoy the experience.

This theme originates from the very first game I created during my student days.

For those who own Bakin, the internal game data is also provided, and I sincerely hope this opportunity encourages you to explore Bakin as well—and perhaps, just as I once did, discover the joy of creating games for yourself.

As a sample game by design, the story is depicted up through Chapter One.

That said, my creative spark has been reignited.... so, I’d love to work on Chapter Two and beyond someday! ( ◠‿◠ )

■ Story

A young noble girl, raised in comfort and without hardship, becomes a wanderer overnight.

Meanwhile, a forsaken child hidden away by the Church escapes from its underground cells.

One girl, once part of a family charged with “judging the guilty,” suddenly becomes the hunted.
The other, freed from the chains that bound her life, steps into the world for the first time.

Together, the noble girl and the forsaken child begin walking on their own feet—
their journey guided by a shared hope for a land of happiness.

What fate awaits these two travelers?

■ Characters

Falmire von Trikia
Daughter of Selvein, Count of Trikia.
A noble girl raised within the refined world of the upper aristocracy.
Loved by her father, cared for by her maids and the family’s butler, and cherished by the people of her domain, she grew up bright and carefree.
Though still a child, she inherited her father’s uncompromising dislike for “crooked” ways.

Carcell Luminarie
A maid serving the household of Count Selvein.
At times a dependable older sister to the mischievous Falmire, and at others a gentle teacher in place of a mother, Carcell has long supported and watched over the Trikia family with devotion.

Parfi
A mysterious girl whom Falmire encounters at a forest spring.
Her skin, hair, and eyes are all pale and translucent white.
Though unable to speak, her gentle smile brings comfort to Falmire.

Count Selvein von Grail Trikia
Lord of the Trikia domain within the Royal Capital of Enbican.
His residence lies in Snowfield, a town surrounded by mountains and forests.
Admired by his people for the just rule he enforces, he is also a deeply devoted father who treasures his daughter.

■ Chief Director

MAKOTO KEDOUIN
A Japanese game creator and scenario writer from Amagasaki City, Hyogo Prefecture. Gained attention during student years for the self-developed horror game “Corpse Party”, initially released as a doujin (indie) title before being commercialized. The Corpse Party series has since expanded beyond games into novels, drama CDs, and anime, earning critical acclaim both in Japan and abroad.
Renowned for crafting intense, emotionally resonant stories that delve deep into the human psyche—often in genres such as horror, suspense, and coming-of-age ensemble dramas. Known especially for distinctive horror presentation and psychological depth, the works have attracted a loyal fanbase.
Continues to actively release new titles in both games and novels. Emphasizes starting with the story first when developing a project, often incorporating personal experiences and emotions into worldbuilding.
Note: “Corpse Party” is a work by Team GrisGris. “Corpse Party BR, BS, 2U, BD, TP” are also copyrighted works by Team GrisGris/MAGES.

■ “REINES DU SABBAT Queen of Sacrifice.” Game Overview

  • Title: REINES DU SABBAT Queen of Sacrifice.
  • Genre: Mystic Adventure
  • Recommended System Requirements:
    OS: Windows10 (64bit), CPU: Core i5-8400/Ryzen 5 1500X or better, Memory: 16GB, Graphics: NVIDIA® GeForce™ GTX1650/AMD Radeon™ RX570, Storage: 500 MB available space
  • Distribution Site: RPG Developer Bakin Official Website
  • Number of Players: 1
  • Online Support: Not Supported
  • Supported Languages: Japanese, English and Simplified Chinese (Traditional Chinese support planned for a later date.)
  • Price: Free
  • Release Date: December 17, 2025
  • Development: MAKOTO KEDOUIN / SmileBoom Co.Ltd.
  • Publisher: SmileBoom Co.Ltd.
  • Special Page: https://rpgbakin.com/en/products/reines-du-sabbat-queen-of-sacrifice/
  • Copyright Notice: ©2025 SmileBoom Co.Ltd. / Original Work by MAKOTO KEDOUIN

 

 “REINES DU SABBAT Queen of Sacrifice.” Now Available – SNS Giveaway!

We are excited to announce the release of the new sample game “REINES DU SABBAT Queen of Sacrifice.”, created using Bakin. To celebrate, we are launching an SNS giveaway campaign where fans can win Bakin and exclusive “REINES DU SABBAT Queen of Sacrifice.” merchandise!
Follow the official Bakin X account and repost the campaign post for a chance to win RPG Developer Bakin (3 winners). In addition, share your impressions, screenshots, or favorite moments from “REINES DU SABBAT Queen of Sacrifice.” on X with the two designated hashtags for a chance to win RPG Developer Bakin and original “REINES DU SABBAT Queen of Sacrifice.” merchandise (10 winners).
Share your thoughts and favorite scenes with the hashtags, and enjoy spreading the appeal of both Bakin and “REINES DU SABBAT Queen of Sacrifice.”!

● “REINES DU SABBAT Queen of Sacrifice.” Release Commemorative SNS Giveaway Campaign Details

  • Campaign Period: December 17, 2025 (Wed) – January 14, 2026 (Wed)
  • Campaign Page: https://rpgbakin.com/en/news/sabbat-sns-cp/
  • How to Participate:
    1. Follow the official “RPG Developer Bakin” account (@RPGBakin) and repost the designated campaign post.
    2. On X (formerly Twitter), post your impressions with the following hashtags:
      #ReinesDuSabbat　#RPGBakin

      • Your post should showcase the appeal of “REINES DU SABBAT Queen of Sacrifice.” (impressions, screenshots, favorite scenes, short gameplay clips, etc.).
      • Please avoid spoilers for key story events (late-game developments, puzzle solutions, endings) to respect players who have not yet played.
  • Prizes:
    1. Follow & Repost Only:
      RPG Developer Bakin (3 winners)
    2. Follow & Repost + Impressions with Hashtags:
      RPG Developer Bakin + “REINES DU SABBAT Queen of Sacrifice.”   Acrylic Figure Stand (10 winners)

      • Note:
        • 9 winners will receive one random acrylic figure from three designs. 1 winner will receive all three designs plus the logo.
        • The image is a sample; final designs may differ.
        • Figure designs will be announced at a later date.
  • Winner Announcement: Winners will be contacted via DM from the official account after the campaign ends.
  • Important Notes:
    • For posts eligible for reposting, please see the campaign page.
    • Only public accounts are eligible for the draw.
    • Posts that violate public order/morality or infringe on others’ rights are invalid.
    • Multiple posts are allowed, but each account can only win once.
    • For other details, please review the notes on the campaign page before participating. 

Reserve Member Enhancements! Major Update Ver. 2.2 Expands Game Systems

The final major update of the year, Ver. 2.2, introduces highly requested enhancements to the reserve member system, along with new features that expand battle mechanics and visual effects. In addition, the project data for the new sample game “REINES DU SABBAT Queen of Sacrifice.” has been added to the Game Gallery.

● RPG Developer Bakin Ver. 2.2 New Features Overview

■ Reserve Member Function Enhancements
Ver. 2.2 adds several new functions to make better use of reserve members in the party:
• Reserve members can now receive experience points earned in battle.
• Swap functionality during battle allows switching active and reserve members.
• Various event panels can now target reserve members as well.

These updates make it easier to create games that utilize the reserve member system effectively.

■ Party Menu
A new Party Menu feature has been added, allowing you to group commands such as “Swap Members” and “Escape” before selecting individual member actions during battle.
Combined with existing Bakin features, this enables even greater freedom in designing battle flow.

■ Solo Party
When using items or skills, unnecessary cast member selection has been removed, allowing for smoother gameplay.
Previously, players always had to specify “who does what to whom,” even when the choice was obvious. This simplification makes menu navigation smoother and more natural for solo adventures.

■ Sample Project: “REINES DU SABBAT Queen of Sacrifice.”

The new sample game “REINES DU SABBAT Queen of Sacrifice.”, created by game creator MAKOTO KEDOUIN using Bakin, has been added to the Game Gallery.

All assets included in this game, such as characters, are freely available to Bakin users in accordance with the “REINES DU SABBAT Queen of Sacrifice.” Original Content Usage Policy. For details, please refer to the policy for the original work and assets of “REINES DU SABBAT Queen of Sacrifice.”

Many other features and improvements have also been implemented.
Take this opportunity to challenge yourself and create your own games with RPG Developer Bakin!

About RPG Developer Bakin

"RPG Developer Bakin" is a game creation tool that combines ease of use with powerful features. It makes it simple for anyone to create games inspired by "your world." It includes a map editor that allows you to create maps as if you were playing a game; an event creation system that controls the game by arranging panels with functions; a database that provides detailed character status settings; and advanced screen effect settings that can dramatically alter scenery. It also provides many other tools. Graphics and sound assets are also provided so you can start creating your game right away. The tool launched on Steam in October 2022 and has continuously improved and expanded based on creator feedback. Following ongoing feature enhancements and additions, the official version was released on August 28, 2025.

Factsheet