{"rewrite":{"id":"r_f2643548757a12bff223cb3b","clusterId":"c_87154915be40ab645393f723","slug":"krafton-event-details-ai-game-design-behind-mimesis","model":"deepseek-v4-flash:free","headline":"KRAFTON Event Details AI Game Design Behind MIMESIS","summary":"At a KRAFTON x ReLU Games talk event in Tokyo on August 5, ReLU staff detailed their AI game design approach, including the three principles behind their studio workflow and the development of the horror game MIMESIS. The game, which pits four players against an AI that mimics them, has sold 2 million copies on Steam since early access began in October 2025.","whyItMatters":"The event shows ReLU Games treating AI not as a tool but as a design language, with a prototype pipeline that produced 114 seeds and turned a shelved concept into a 2-million-seller.","webCardHtml":"\u003cp\u003eThe talk event, held in Tokyo on August 5, featured sessions by ReLU Games staff on how the studio builds games around AI rather than using it as a simple utility. AI Creative team lead Lee Ki-moon explained three principles: bottom-up creation of many playable prototypes, starting from playable seeds rather than idea documents, and crossing job boundaries to solve problems.\u003c/p\u003e\u003cp\u003eThe studio developed an internal tool called Nolan that builds and deploys staff prototypes automatically. One seed, made by an art director for players who get motion sick from MIMESIS, drew 586 comments and spawned multiple variations. The studio has published 114 seeds, each made by one AI agent specialist within five days.\u003c/p\u003e","blueskyPost":"ReLU Games' MIMESIS sold 2 million copies on Steam since October 2025, but the talk focused on the AI's design, not the sales. The studio's three principles for AI game development suggest the mimicry is a feature, not a gimmick.","twitterPost":"MIMESIS's 2 million Steam sales since October 2025 show AI mimicry works. ReLU Games' three principles frame it as a design method, not a novelty.","threadsPost":"MIMESIS has sold 2 million copies on Steam since early access began in October 2025. At the KRAFTON x ReLU Games talk, the focus was on the AI design, not the numbers. The three principles behind their workflow treat player-mimicking NPCs as a core mechanic, not a tech demo.","newsletterBlurb":"ReLU Games opened up about its AI-first development process at a Tokyo talk event, covering the three principles that guide its prototype pipeline and the story behind MIMESIS, a horror game that sold 2 million copies on Steam.","attributionJson":"[{\"source\":\"4Gamer.net\",\"url\":\"https://www.4gamer.net/games/898/G089803/20260807066/\",\"title\":\"「MIMESIS」の開発過程が明かされた「KRAFTON × ReLU Games 開発トーク」をレポート。AIを用いたゲーム開発や，プレイヤーを模倣するNPCの制作手法などが紹介された\"}]","lintFlagsJson":null,"lintHits":0,"costUsd":0,"inputTokens":6172,"outputTokens":590,"status":"published","repairAttempts":0,"nextRepairAt":null,"factsAttemptedAt":1786152355,"createdAt":"2026-08-08T01:21:33.000Z","publishedAt":"2026-08-08T01:21:44.000Z","updatedAt":"2026-08-08T01:21:33.000Z"},"cluster":{"id":"c_87154915be40ab645393f723","canonicalTitle":"「MIMESIS」の開発過程が明かされた「KRAFTON × ReLU Games 開発トーク」をレポート。AIを用いたゲーム開発や，プレイヤーを模倣するNPCの制作手法などが紹介された","representativeArticleId":"a_5d4379ccdd172d9c15e40be9","sourceCount":1,"writtenSourceCount":1,"writeAttempts":0,"isSolo":true,"entitiesJson":"{\"anime_titles\":[],\"manga_titles\":[],\"work_titles\":[\"MIMESIS\"],\"studios\":[\"KRAFTON\",\"ReLU Games\"],\"people\":[],\"type\":\"event\",\"domain\":\"games\",\"is_roundup\":false}","contentType":"news","status":"published","firstSeenAt":"2026-08-08T00:00:00.000Z","lastSeenAt":"2026-08-08T00:00:00.000Z","updatedAt":"2026-08-08T01:21:44.000Z"},"attribution":[{"source":"4Gamer.net","url":"https://www.4gamer.net/games/898/G089803/20260807066/","title":"「MIMESIS」の開発過程が明かされた「KRAFTON × ReLU Games 開発トーク」をレポート。AIを用いたゲーム開発や，プレイヤーを模倣するNPCの制作手法などが紹介された"}],"entities":{"anime_titles":[],"manga_titles":[],"work_titles":["MIMESIS"],"studios":["KRAFTON","ReLU Games"],"people":[],"type":"event","domain":"games","is_roundup":false},"keyFacts":null}