{"rewrite":{"id":"r_62a43e7964e5bc5b9cb26bfe","clusterId":"c_ef55fb0389be694fd688202b","slug":"the-mermaid-mask-detective-grimoire-returns-in-locked-room-submarine-mystery","model":"deepseek-v4-flash","headline":"The Mermaid Mask: Detective Grimoire Returns in Locked-Room Submarine Mystery","summary":"SFB Games released the mystery adventure game 'The Mermaid Mask' for Nintendo Switch, Nintendo Switch 2, and PC via Steam on July 17. The PS5 version is expected later. The game is a new point-and-click entry in the Detective Grimoire series, set on a hand-drawn submarine where the captain is murdered in a perfect locked room. The only clue is an ancient stone cauldron. Players examine 3D clues and interrogate an eccentric crew.","whyItMatters":"The release adds a distinctive locked-room premise to the Detective Grimoire series, now available on multiple platforms with a PS5 version to follow.","webCardHtml":"\u003cp\u003eIn \u0026#39;The Mermaid Mask,\u0026#39; Detective Grimoire and his partner Sally investigate the murder of the captain of the submarine Moltuga, whose body was found in a sealed room. The only clue to the cause of death is an ancient stone cauldron. The submarine is entirely hand-drawn and can be explored in full. Suspects are voiced in English, and the original soundtrack was performed by the Budapest Art Orchestra. A demo is available on Steam along with a 10% launch discount until July 24.\u003c/p\u003e","blueskyPost":"The Mermaid Mask, a new point-and-click mystery in the Detective Grimoire series, is out today on Switch, Switch 2, and PC. The submarine Moltuga holds a locked-room murder with only a stone cauldron as clue. A demo is available on Steam.","twitterPost":"The Mermaid Mask, a new point-and-click mystery in the Detective Grimoire series, is out today on Switch, Switch 2, and PC. The submarine Moltuga holds a locked-room murder with only a stone cauldron as clue. A demo is on Steam.","threadsPost":null,"newsletterBlurb":"SFB Games released 'The Mermaid Mask' today, a point-and-click adventure starring Detective Grimoire. The locked-room murder on a hand-drawn submarine is now available on Switch, Switch 2, and PC, with a PS5 version coming soon. A demo is live on Steam.","attributionJson":"[{\"source\":\"Denfaminicogamer\",\"url\":\"https://news.denfaminicogamer.jp/news/2607172i\",\"title\":\"Mystery Game 'The Mermaid Mask' Challenges Players to Solve a 'Perfect Locked-Room Murder' on a Submarine, Released Today. Only Clue to the Captain's Death is a Stone Cauldron\"}]","lintFlagsJson":null,"lintHits":0,"costUsd":0,"inputTokens":3809,"outputTokens":1845,"status":"published","repairAttempts":0,"nextRepairAt":null,"factsAttemptedAt":1784278315,"createdAt":"2026-07-17T08:45:10.000Z","publishedAt":"2026-07-17T08:47:29.000Z","updatedAt":"2026-07-17T08:45:10.000Z"},"cluster":{"id":"c_ef55fb0389be694fd688202b","canonicalTitle":"潜水艦で起きた“完全なる密室殺人”に挑む謎解きゲーム『The Mermaid Mask』が本日リリース。殺害された船長の死因の手がかりは、部屋にあった石の大釜のみ","representativeArticleId":"a_a77e9424daa6d507877285e2","sourceCount":1,"writtenSourceCount":1,"writeAttempts":0,"isSolo":true,"entitiesJson":"{\"anime_titles\":[],\"manga_titles\":[],\"work_titles\":[\"The Mermaid Mask\"],\"studios\":[],\"people\":[],\"type\":\"release\",\"domain\":\"games\",\"is_roundup\":false}","contentType":"news","status":"published","firstSeenAt":"2026-07-17T06:42:39.000Z","lastSeenAt":"2026-07-17T06:42:39.000Z","updatedAt":"2026-07-17T08:47:29.000Z"},"attribution":[{"source":"Denfaminicogamer","url":"https://news.denfaminicogamer.jp/news/2607172i","title":"潜水艦で起きた“完全なる密室殺人”に挑む謎解きゲーム『The Mermaid Mask』が本日リリース。殺害された船長の死因の手がかりは、部屋にあった石の大釜のみ"}],"entities":{"anime_titles":[],"manga_titles":[],"work_titles":["The Mermaid Mask"],"studios":[],"people":[],"type":"release","domain":"games","is_roundup":false},"keyFacts":null}