{"rewrite":{"id":"r_c9e308af732b754e5da93bd8","clusterId":"c_20202b48f7da9ee0ce8a0017","slug":"kodansha-game-lab-opens-steam-page-for-legacy-code","model":"deepseek-v4-1-flash","headline":"Kodansha Game Lab Opens Steam Page for Legacy Code","summary":"Kodansha Game Lab opened the Steam store page for Legacy Code on September 16 and started accepting wishlist registrations. The physics simulation game is developed by indie creator Room 127 and is scheduled for release on PC in 2027. Players combine junk parts, including doll heads, electric fans, televisions, 3D puzzles, dentures, chains, and cacti, into creatures called Mechanimals, then operate them directly. Defeating enemies yields the parts they carried, and adding those parts changes both appearance and performance. Each part has its own movement quirks, and no clear correct answer exists for assembly. The game runs on the Marionette Engine, an in-house physics system built by Room 127 that moves a Mechanimal regardless of how its parts are combined, though the result sometimes walks in ways its own creator did not intend. The cycle of build, fight, and collect expands the walkable world, from deserts to snowy mountains and ruins. Legacy Code supports Japanese, English, and Simplified Chinese, with pricing undecided.","whyItMatters":"The pitch rests less on the parts-collection loop than on the Marionette Engine's promise that any configuration of junk will still move, which makes the studio's inability to predict the result a design choice rather than a bug.","webCardHtml":"\u003cp\u003eRoom 127 is the game development division of Keiritsu Inc. The studio\u0026#39;s earlier work was on systems that assemble living creatures from parts and creatures that move through procedural animation. Legacy Code has been selected as one of eight finalists for Sense of Wonder Night 2026, an indie game contest held inside Tokyo Game Show 2026 at Makuhari Messe International Conference Hall on September 17, 2026.\u003c/p\u003e\n\u003cul\u003e\n  \u003cli\u003eThe contest drew more than 1,500 submissions from around the world through the Tokyo Game Show 2026 indie call for entries.\u003c/li\u003e\n  \u003cli\u003eRoom 127 will give a presentation on the day of the event.\u003c/li\u003e\n  \u003cli\u003eThe game has an X account at https://x.com/room_127_lc.\u003c/li\u003e\n  \u003cli\u003eDevelopment is by Room 127, with publishing by Kodansha Ltd.\u003c/li\u003e\n  \u003cli\u003eThe player count is one.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003eLegacy Code was previously known as \u0026#34;Legacy Code (tentative)\u0026#34; and was selected in February 2023 as a lab member of Game Creators Lab Audition Vol. 2. At that time it was introduced as a battle simulation and tower defense game. It now heads to Steam as Room 127\u0026#39;s first title to be released.\u003c/p\u003e","blueskyPost":"Legacy Code's Marionette Engine moves any Mechanimal no matter how its parts are combined, so the physics itself is the game's co-author. Kodansha Game Lab lists PC and a 2027 window.","twitterPost":"Legacy Code's Marionette Engine moves any Mechanimal no matter how parts combine, so Room 127 is building around motions its own creator did not intend.","threadsPost":"Legacy Code ships on the Marionette Engine, a physics system Room 127 built so any combination of parts still moves. Parts carry behavior quirks, and the results sometimes walk in ways the creator did not intend, which means the simulator authored part of the game.","newsletterBlurb":"Kodansha Game Lab opened the Steam store page for Legacy Code, a physics simulation game from indie creator Room 127 where players assemble junk into creatures called Mechanimals and take their parts from defeated enemies. The studio's Marionette Engine moves any combination of parts, and the outcome is not always what the builder intended. It is scheduled for PC in 2027 and is a finalist at Sense of Wonder Night 2026.","attributionJson":"[{\"source\":\"Automaton\",\"url\":\"https://automaton-media.com/articles/newsjp/20260916-467853/\",\"title\":\"Official Announcement of 'Legacy Code,' a Sim Where You Build \\\"Slightly Creepy Creatures\\\" That Stick to Anything: Steal Parts from Enemies and Grow Ever Larger, Giving Birth to Mysterious Creatures Whose Behavior No One Can Predict\"},{\"source\":\"Denfaminicogamer\",\"url\":\"https://news.denfaminicogamer.jp/news/260916i\",\"title\":\"A cardboard body with crab legs? Steam store page for 'Legacy Code', a game where you stick anything onto anything to create mysterious creatures, is now live\"},{\"source\":\"Game Spark\",\"url\":\"http://www.gamespark.jp/article/2026/09/16/172341.html\",\"title\":\"Physics Simulation 'Legacy Code' Where You Build Mysterious Creatures from Junk and Mod Them Heads to Steam in 2027; Features an Engine That Makes Any Combination of Parts Move\"}]","lintFlagsJson":null,"lintHits":0,"costUsd":0,"inputTokens":16301,"outputTokens":1468,"status":"published","repairAttempts":0,"nextRepairAt":null,"factsAttemptedAt":1789530265,"createdAt":"2026-09-16T03:39:20.000Z","publishedAt":"2026-09-16T03:43:20.000Z","updatedAt":"2026-09-16T03:43:20.000Z"},"cluster":{"id":"c_20202b48f7da9ee0ce8a0017","canonicalTitle":"何でもくっつく“ちょいキモ生物”づくりシム『Legacy Code』正式発表。敵からパーツを奪いどんどん巨大化、誰にも予測がつかない謎挙動生物爆誕","representativeArticleId":"a_f27d45b8e4d155bc32524282","sourceCount":3,"writtenSourceCount":3,"writeAttempts":0,"isSolo":false,"entitiesJson":"{\"anime_titles\":[],\"manga_titles\":[],\"work_titles\":[\"Legacy Code\"],\"studios\":[\"Kodansha Game Lab\",\"127号室\"],\"people\":[],\"type\":\"announcement\",\"domain\":\"games\",\"is_roundup\":false}","contentType":"news","status":"published","firstSeenAt":"2026-09-16T03:00:03.000Z","lastSeenAt":"2026-09-16T03:00:41.000Z","updatedAt":"2026-09-16T03:43:20.000Z"},"attribution":[{"source":"Denfaminicogamer","url":"https://news.denfaminicogamer.jp/news/260916i","title":"段ボールの体にカニの脚？なんでもくっつけて謎の生物を作るゲーム『Legacy Code』のSteamストアページが公開"},{"source":"Automaton","url":"https://automaton-media.com/articles/newsjp/20260916-467853/","title":"何でもくっつく“ちょいキモ生物”づくりシム『Legacy Code』正式発表。敵からパーツを奪いどんどん巨大化、誰にも予測がつかない謎挙動生物爆誕"},{"source":"Game Spark","url":"http://www.gamespark.jp/article/2026/09/16/172341.html","title":"ガラクタで謎の生き物を作り魔改造する物理シミュレーション『Legacy Code』Steamで2027年リリースへ。どんなパーツの組み合わせでも動くエンジン搭載"}],"entities":{"anime_titles":[],"manga_titles":[],"work_titles":["Legacy Code"],"studios":["Kodansha Game Lab","127号室"],"people":[],"type":"announcement","domain":"games","is_roundup":false},"keyFacts":["Kodansha Game Lab opened the Steam store page for Legacy Code on September 16, 2026.","Legacy Code is scheduled for release on PC via Steam in 2027, with pricing undecided.","Legacy Code is developed by indie creator Room 127 and is described as the studio's first title to be released.","Legacy Code was selected as one of eight finalists for Sense of Wonder Night 2026, chosen from more than 1,500 submissions.","The game's Marionette Engine moves a Mechanimal no matter how its parts are combined, and the result can be unpredictable."]}