Cygames Details Four AI Writing Tools Built for Scenario Support
Cygames is treating AI as a practical support layer for long-running game writing, with tools that range from prototype stage to active daily use depending on the task.
Reporting from 1 source: GameBusiness.jp.
At CEDEC 2026, Cygames developer support staff member Hiroshi Tadefuku presented four AI tools built to assist scenario writers. The tools detect contradictions between scenarios and character settings, suggest unique dialogue phrasing, check dialects, and catch typos. The tools were assembled using Dify and GPT-4o, with some already in active use.
The four tools were built to address problems the studio's existing scenario writing and review system, called Koebon, could not cover. The contradiction detection tool pulls character settings from Confluence pages, strips the HTML, and extracts only needed fields through GPT-4o before checking against a scenario. It can handle up to 10 characters per prompt, but the studio said full deployment has not happened because character data management differs between projects.
The dialogue support tool is in active use. It references roughly 100 lines of past dialogue and a 1,000-word list to offer five alternative expressions matching a character's distinctive speech patterns. The dialect checker, also running now, uses 200 lines of reviewed past scenarios. The typo tool was rebuilt from a 2022 version, though the studio noted AI still struggles with kanji readings and writer-specific decorative phrasing.
Synthesized by Yomimono from the 1 cited source below, including Japanese-language reporting where cited, then editorially reviewed before publishing.
Sources
- GameBusiness.jp 方言、特有の言い回し、誤字をサポートするCygamesのシナリオ執筆支援AIツールはこうして開発された【CEDEC2026】