{"rewrite":{"id":"r_3ce6c69dc42f6700ab8a14de","clusterId":"c_14357a4fa2c678352dd3fd93","slug":"apple-watch-water-flea-simulator-daphnia-launches-on-app-store","model":"deepseek-v4-flash:free","headline":"Apple Watch Water Flea Simulator Daphnia Launches on App Store","summary":"Hobby Co., Ltd. released the Apple Watch game Daphnia: Ecological Observation Game on the App Store on August 3, 2026, priced at 600 yen. Players observe water flea growth, molting, egg laying, and reproduction, with walking generating energy for algae and wrist movements mixing the tank water.","whyItMatters":"The game turns everyday Apple Watch wear into a living ecosystem simulation, where walking and wrist motion directly drive the water flea colony's survival.","webCardHtml":"\u003cp\u003eDaphnia: Ecological Observation Game is now available on the App Store for Apple Watch, priced at 600 yen. The simulation models a full water flea ecosystem, where algae, dissolved oxygen, water temperature, water mixing, and population density all interact.\u003c/p\u003e\u003cp\u003eWalking while wearing the watch generates energy that grows algae, which the water fleas eat. Wrist movements mix the tank water, gently spreading algae and supplying oxygen, though overly strong motion stresses the fleas and disrupts their swimming and feeding. The Digital Crown zooms from the whole tank down to individual fleas at up to 6x magnification.\u003c/p\u003e\u003cp\u003eThe app tracks population, resting eggs, algae levels, and water conditions, and reflects up to 30 days of ecological changes when reopened, even without background calculations.\u003c/p\u003e","blueskyPost":"Daphnia: Ecological Observation Game is out on Apple Watch. Walk to grow algae, move your wrist to mix the tank, and watch water fleas molt, lay eggs, and reproduce. 600 yen on the App Store.","twitterPost":"Daphnia: Ecological Observation Game is now on Apple Watch for 600 yen. Walking grows algae, wrist motion mixes the water, and you can zoom in 6x to watch water fleas live their whole lives.","threadsPost":null,"newsletterBlurb":"Hobby Co. released Daphnia: Ecological Observation Game for Apple Watch, a 600 yen simulation where walking and wrist movement drive a water flea ecosystem. The game models algae, oxygen, temperature, and population dynamics, and reflects up to 30 days of change between sessions.","attributionJson":"[{\"source\":\"4Gamer.net\",\"url\":\"https://www.4gamer.net/games/032/G103229/20260812023/\",\"title\":\"Simulation game 'Daphnia: Ecological Observation Game' that lets you observe the growth and reproduction of water fleas now available for Apple Watch\"}]","lintFlagsJson":null,"lintHits":0,"costUsd":0,"inputTokens":4335,"outputTokens":562,"status":"published","repairAttempts":0,"nextRepairAt":null,"factsAttemptedAt":1786516187,"createdAt":"2026-08-12T06:23:05.000Z","publishedAt":"2026-08-12T06:26:44.000Z","updatedAt":"2026-08-12T06:23:05.000Z"},"cluster":{"id":"c_14357a4fa2c678352dd3fd93","canonicalTitle":"ミジンコの成長や繁殖を観察できるシミュレーションゲーム「ミジンコ：生態観察ゲーム」Apple Watch向けに配信中","representativeArticleId":"a_db4014b4477544badefee556","sourceCount":1,"writtenSourceCount":1,"writeAttempts":0,"isSolo":true,"entitiesJson":"{\"anime_titles\":[],\"manga_titles\":[],\"work_titles\":[\"ミジンコ：生態観察ゲーム\"],\"studios\":[],\"people\":[],\"type\":\"release\",\"domain\":\"games\",\"is_roundup\":false}","contentType":"news","status":"published","firstSeenAt":"2026-08-12T05:28:21.000Z","lastSeenAt":"2026-08-12T05:28:21.000Z","updatedAt":"2026-08-12T06:26:45.000Z"},"attribution":[{"source":"4Gamer.net","url":"https://www.4gamer.net/games/032/G103229/20260812023/","title":"ミジンコの成長や繁殖を観察できるシミュレーションゲーム「ミジンコ：生態観察ゲーム」Apple Watch向けに配信中"}],"entities":{"anime_titles":[],"manga_titles":[],"work_titles":["ミジンコ：生態観察ゲーム"],"studios":[],"people":[],"type":"release","domain":"games","is_roundup":false},"keyFacts":null}