News Releases

November 27th, 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”
 Game Creator: MAKOTO KEDOUIN × Bakin
Development Blog Vol.5:
“Break Through! Master Up!” Now Live
3 new DLCs available!

November 26, 2025 - Sapporo, Japan – SmileBoom Co.Ltd. has published the fifth installment of its development blog, "Made with RPG Developer Bakin", which chronicles the process of renowned game creator MAKOTO KEDOUIN as he builds a new sample game using RPG Developer Bakin (read as "BAH-keen"; hereafter referred to as Bakin).  In addition, we are pleased to announce the release of a plugin that adds voice effects to dialogues, as well as two asset packs featuring high-resolution pixel-art characters and retro-style 3D dungeons.

KEDOUIN Falls into the Bakin Swamp – Blog #5 Now Live

KEDOUIN, the creator behind the popular horror game Corpse Party, is currently developing a new sample game using Bakin. The journey is documented in the fifth blog installment of "Made with RPG Developer Bakin", titled “Break Through! Master Up!” which is now available.
The article showcases KEDOUIN’s creative process as he experiments with camera work, rendering settings, and mini-game development to deepen the game’s world.
It vividly conveys the “swamps” and obsessive attention to detail that KEDOUIN navigates on the way to shaping the sample game.

■Made with RPG Developer Bakin

— Part 5: Break Through! Master Up!
URL: https://rpgbakin.com/en/blog/made-with-bakin/17215/

About 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.

Now on sale! Three new DLCs are available!

We released Tree new DLC packs on November 26, 2025:
These include “Talking Sounds,” a plugin that adds sound effects to conversation events; “Vibrato NPC PIXEL PACK Vol.3,” a collection of high-resolution pixel-art characters that rebuilds the standard support characters; and “Retro Tiny Dungeon,” an asset pack for creating retro low-angle 3D-style dungeons.
Also, 10% off launch discount until December 10, 2025, at 10am PST! Don't miss this opportunity!

Overview of DLC Released on November 26, 2025

◆ Launch Sale
  • Period: November 26, 2025 (Wednesday) to December 10, 2025 (Wednesday) 10:00 a.m. (PST)
  • Discount Rate: 10% OFF
◆RPG Developer Bakin Talking Sounds

The "Talking Sounds" plugin lets you play sound effects during message display, creating the illusion of characters speaking. By adjusting pitch, volume, and panning, you can give each character a unique vocal feel—perfect for enhancing your game's dialogue with a more professional and immersive touch!

  • Includes 10 built-in talking sounds
  • Change sound and settings via C# call events or variables
  • Randomize multiple sounds with custom volume, panning, and pitch ranges
  • GUI support for customizing variable names and caching sounds for performance
  • Create and switch between custom sound presets on the fly
  • Apply presets via C# calls or message-start commands

Add character ”voices” to your cutscenes and bring your dialogue to life!

◆RPG Developer Bakin Vibrato NPC PIXEL PACK Vol.3

This DLC features a collection of high-resolution pixel characters newly illustrated by Vibrato, based on six support characters from RPG Developer Bakin’s standard assets:
Soldier (Helmet), Soldier (No Helmet), Sage, Fortune Teller, Pirate, and Sailor.
Each sprite is drawn at roughly four times the resolution of the original 40×40 dot assets, bringing out finer detail and personality in every character.

◆RPG Developer Bakin Retro Tiny Dungeon

This DLC is an asset pack that lets you build dark fantasy dungeons in a retro-inspired low-angle 3D style.
Create immersive multi-layered dungeons using modular pieces like stone walls and floors, banners, torches, traps, switches, locked doors, moving axes, hammers, and more. The block-based system allows you to combine parts freely and design maze-like layouts filled with treasures and interactive elements.
Perfectly compatible with lighting and particle effects—add smoke, glowing lights, and atmospheric touches to create cinematic dungeon scenes.

  • Stylish and lightweight low-poly design
  • Includes a wide variety of traps, doors, and puzzle mechanics
  • Easy-to-use modular structure for quick level creation
  • Beginner-friendly layout for crafting maze rooms and gimmicks

Highly versatile for a wide range of genres, including dungeon crawlers, action-puzzle games, and exploration RPGs.

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