{"rewrite":{"id":"r_02185b6cb1e560a11aea5ef2","clusterId":"c_e8e7c52ab5c30b8259696d8f","slug":"lost-museum-kaigami-tsuisoutan-set-for-summer-2027-release-on-switch-2-and-steam","model":"deepseek-v4-flash","headline":"Lost Museum -Kaigami Tsuisoutan- Set for Summer 2027 Release on Switch 2 and Steam","summary":"Happinet announced on September 3, 2026 that the new adventure game 'Lost Museum -Kaigami Tsuisoutan-' will launch in summer 2027 for Nintendo Switch 2 and PC via Steam. The price is undecided. Along with the announcement, the publisher opened a teaser site, a Steam store page, and released a teaser trailer. The title is part of the 'Happinet Indie Collection' label. The game is a point-and-click adventure set in the otherworldly Lost Museum, where beings called Kaigami, born from the feelings and memories of paintings, live. Protagonist Vince, a boy searching for his missing older brother, obtains a magic pen and interacts with the Kaigami to recover their lost memories. Gameplay has three elements: exploration, Kaigami appraisal, and memory restoration. The scenario is written by Rika Suzuki, known for 'Another Code: Two Memories'. The announced Kaigami include Novi of '???', Sunny of 'Sunflowers', Madame of 'Mona Lisa', Ryu of 'The Great Wave off Kanagawa', and Nephia of 'Water Lilies'. A playable demo will be at the Happinet booth during Tokyo Game Show 2026, held at Makuhari Messe from September 17 to 21.","whyItMatters":"The title brings a scenario writer associated with the 'Another Code' series to a museum-set mystery, and the untitled identity of the partner character Novi is positioned by one outlet as a potential major story mystery.","webCardHtml":"\u003cp\u003eThe announcement comes through Happinet\u0026#39;s \u0026#34;Happinet Indie Collection\u0026#34; label, and the publisher had teased the title ahead of time. Game Spark notes that in an August 28 article, it had flagged this as one of \u0026#34;two titles with undisclosed information\u0026#34; among Happinet\u0026#39;s Tokyo Game Show 2026 exhibition lineup.\n\nThe character designs pull visual elements from their source paintings. Sunny, the Kaigami of \u0026#34;Sunflowers,\u0026#34; is gentlemanly and a skilled cook, though his homemade tea blend is poorly received. Madame, from \u0026#34;Mona Lisa,\u0026#34; loves music and is the one who brought musical life to the Lost Museum. Ryu, from \u0026#34;The Great Wave off Kanagawa,\u0026#34; collects drift items and his specialty is making soba noodles. Nephia, from \u0026#34;Water Lilies,\u0026#34; is described as a twin-like presence to a Kaigami called Lilia. Novi, who serves as Vince\u0026#39;s partner, is the first Kaigami he meets.\n\nRika Suzuki\u0026#39;s prior scenario credits include \u0026#34;Wishroom: Angel\u0026#39;s Memories\u0026#34; and \u0026#34;Dark Auction\u0026#34; alongside the \u0026#34;Another Code\u0026#34; series.\n\nAt the TGS booth, Sunny, Madame, Ryu, and Nephia get life-size photo panels, while Novi appears as a plush toy. A Sunny cosplayer is scheduled to appear. Giveaways include an A4 clear file, a Novi sticker for demo players, and a clear bookmark for social media follows or Steam wishlist registration. The game supports Japanese, English, Simplified Chinese, Traditional Chinese, and Korean. The official X account is @lostmuseum_ofcl.\u003c/p\u003e","blueskyPost":"Happinet's museum mystery 'Lost Museum -Kaigami Tsuisoutan-' launches summer 2027 for Switch 2 and Steam, with scenario work by Rika Suzuki of Another Code fame.","twitterPost":"TGS 2026 will host a playable demo of 'Lost Museum -Kaigami Tsuisoutan-', where visitors meet painting-born Kaigami including one whose motif is listed as '???'.","threadsPost":null,"newsletterBlurb":"Happinet dates its painting-personification adventure 'Lost Museum -Kaigami Tsuisoutan-' for summer 2027 on Switch 2 and Steam. Scenario writer Rika Suzuki joins the project, and a playable demo appears at Tokyo Game Show 2026.","attributionJson":"[{\"source\":\"GAME Watch (Impress)\",\"url\":\"https://game.watch.impress.co.jp/docs/news/2137430.html\",\"title\":\"「カイガミ」たちとの交流を描くADV「Lost Museum -カイガミ追想譚-」2027年夏発売。「TGS2026」に出展\"},{\"source\":\"4Gamer.net\",\"url\":\"https://www.4gamer.net/games/038/G103825/20260901042/\",\"title\":\"ADV 'Lost Museum -KAI GAMI Tsuisoutan-' that deciphers memories of paintings to be released in summer 2027. Playable demo at TGS 2026\"},{\"source\":\"Automaton\",\"url\":\"https://automaton-media.com/articles/newsjp/20260903-464723/\",\"title\":\"Painting Personification ADV 'Lost Museum -Kaigami Tsuisoutan-' to Release in Summer 2027. Interact with Famous Paintings Like 'Mona Lisa' and 'Sunflowers', Recover Lost Memories Through Deduction\"},{\"source\":\"Game Spark\",\"url\":\"http://www.gamespark.jp/article/2026/09/03/171667.html\",\"title\":\"Adventure 'Lost Museum -Kaigami Tsuisoutan-' Investigating the Mystery of Memories Dwelled in Paintings to Release Summer 2027 for Nintendo Switch 2/Steam\"}]","lintFlagsJson":null,"lintHits":0,"costUsd":0,"inputTokens":15589,"outputTokens":1673,"status":"published","repairAttempts":0,"nextRepairAt":null,"factsAttemptedAt":1788400046,"createdAt":"2026-09-03T01:38:11.000Z","publishedAt":"2026-09-03T01:42:22.000Z","updatedAt":"2026-09-03T01:42:22.000Z"},"cluster":{"id":"c_e8e7c52ab5c30b8259696d8f","canonicalTitle":"絵画に宿る記憶の謎に迫るアドベンチャー『Lost Museum -カイガミ追想譚-』2027年夏にニンテンドースイッチ2/Steam向けに発売決定","representativeArticleId":"a_ae7a68cc319cec49dfb8da2a","sourceCount":5,"writtenSourceCount":4,"writeAttempts":0,"isSolo":false,"entitiesJson":"{\"anime_titles\":[],\"manga_titles\":[],\"work_titles\":[\"Lost Museum -カイガミ追想譚-\"],\"studios\":[\"ハピネット\"],\"people\":[\"緑里孝行\"],\"type\":\"announcement\",\"domain\":\"games\",\"is_roundup\":false}","contentType":"news","status":"published","firstSeenAt":"2026-09-03T01:00:05.000Z","lastSeenAt":"2026-09-03T03:48:07.000Z","updatedAt":"2026-09-03T03:53:52.000Z"},"attribution":[{"source":"GAME Watch (Impress)","url":"https://game.watch.impress.co.jp/docs/news/2137430.html","title":"「カイガミ」たちとの交流を描くADV「Lost Museum -カイガミ追想譚-」2027年夏発売。「TGS2026」に出展"},{"source":"4Gamer.net","url":"https://www.4gamer.net/games/038/G103825/20260901042/","title":"絵画の記憶を読み解くADV「Lost Museum -カイガミ追想譚-」，2027年夏に発売決定。TGS 2026で試遊も実施"},{"source":"Denfaminicogamer","url":"https://news.denfaminicogamer.jp/news/2609032j","title":"絵画に込められた想いと記憶を紐解く新作アドベンチャーゲーム『Lost Museum -カイガミ追想譚-』2027年夏にリリース決定。絵画から生まれた存在「カイガミ」との交流を描く"},{"source":"Automaton","url":"https://automaton-media.com/articles/newsjp/20260903-464723/","title":"絵画擬人化ADV『Lost Museum -カイガミ追想譚-』2027年夏発売へ。「モナ・リザ」、「ひまわり」など有名絵画と交流、推理で失われた記憶を取り戻す"},{"source":"Game Spark","url":"http://www.gamespark.jp/article/2026/09/03/171667.html","title":"絵画に宿る記憶の謎に迫るアドベンチャー『Lost Museum -カイガミ追想譚-』2027年夏にニンテンドースイッチ2/Steam向けに発売決定"}],"entities":{"anime_titles":[],"manga_titles":[],"work_titles":["Lost Museum -カイガミ追想譚-"],"studios":["ハピネット"],"people":["緑里孝行"],"type":"announcement","domain":"games","is_roundup":false},"keyFacts":["Happinet announced 'Lost Museum -Kaigami Tsuisoutan-' for release in summer 2027 on Nintendo Switch 2 and PC via Steam, with the price undecided.","The announcement was made on September 3, 2026, alongside a teaser site, Steam store page, and teaser trailer.","The scenario is handled by Rika Suzuki, known for 'Another Code: Two Memories', 'Wishroom: Angel's Memories', and 'Dark Auction'.","A playable demo will be available at the Happinet booth at Tokyo Game Show 2026, held at Makuhari Messe from September 17 to 21.","The game supports Japanese, English, Simplified Chinese, Traditional Chinese, and Korean, and the Switch 2 version will have physical and download editions."]}