{"id":54919,"date":"2025-12-12T22:00:00","date_gmt":"2025-12-12T13:00:00","guid":{"rendered":"https:\/\/automaton-media.com\/en\/?p=54919"},"modified":"2025-12-12T16:35:49","modified_gmt":"2025-12-12T07:35:49","slug":"monster-rancher-inspired-indie-passion-project-mamon-king-tops-steam-charts-in-japan","status":"publish","type":"post","link":"https:\/\/automaton-media.com\/en\/news\/monster-rancher-inspired-indie-passion-project-mamon-king-tops-steam-charts-in-japan\/","title":{"rendered":"Monster Rancher-inspired indie passion project Mamon King tops Steam charts in Japan\u00a0"},"content":{"rendered":"\n<p><strong>Mamon King<\/strong>, a new indie monster-raising simulator created by LiTMUS and popular Japanese gaming YouTuber <a href=\"https:\/\/www.youtube.com\/@yoshinama0130\" target=\"_blank\" rel=\"noreferrer noopener\">Yoshinama<\/a>, has been making waves on Steam. After releasing on December 11, the title recorded over 2,000 concurrent players and became the top-selling game on the Japan Steam store, temporarily outperforming popular mainstays like Apex Legends, The End of History, Overwatch 2, and Arc Raiders.\u00a0\u00a0<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-rich is-provider-twitter wp-block-embed-twitter\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"twitter-tweet\" data-width=\"550\" data-dnt=\"true\"><p lang=\"ja\" dir=\"ltr\">\u30de\u30e2\u30f3\u30ad\u30f3\u30b0\u304c\u65e5\u672c\u3067\u6df1\u591c\u304b\u3089\u4eca\u306e\u6642\u9593\u307e\u3067\u58f2\u308a\u4e0a\u30521\u4f4d\uff01\uff01\uff01\uff01\uff01<br>\u3082\u3061\u308d\u3093\u30b9\u30bf\u30fc\u30c8\u30c0\u30c3\u30b7\u30e5\u3067\u3057\u304b\u306a\u3044\u3093\u3060\u3051\u308c\u3069\u3082\u30b2\u30fc\u30de\u30fc\u3068\u3057\u3066\u3053\u306e\u753b\u50cf\u306f\u5bb6\u5b9d\u306b\u305b\u3056\u308b\u304a\u3048\u306a\u3044\ud83d\ude2d\ud83d\ude2d\ud83d\ude2d\u5b50\u4f9b\u306b\u81ea\u6162\u3059\u308b\uff01<br>\u8cfc\u5165\u3057\u3066\u304f\u3060\u3055\u3063\u305f\u7686\u3055\u3093\u3042\u308a\u304c\u3068\u3046\u3054\u3056\u3044\u307e\u3059\uff01\ud83d\ude47\u200d\u2642\ufe0f <a href=\"https:\/\/t.co\/47y8Y5vxZm\">pic.twitter.com\/47y8Y5vxZm<\/a><\/p>&mdash; \u3088\u3057\u306a\u307e (@yosi980) <a href=\"https:\/\/twitter.com\/yosi980\/status\/1998944913141219745?ref_src=twsrc%5Etfw\">December 11, 2025<\/a><\/blockquote><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script>\n<\/div><figcaption class=\"wp-element-caption\">\u00a0<em>Mamon King has ranked number one in sales in Japan! It&#8217;s only the initial surge, but as a gamer, I simply must treasure this screenshot as a family heirloom to show off to my kids! Thank you to everyone who bought it!\u00a0<\/em> &#8211; Yoshinama\u00a0<\/figcaption><\/figure>\n\n\n\n<p>Inspired by Koei Tecmo\u2019s Monster Rancher franchise, Mamon King allows players to train, fight, and connect with up to 38 unique creatures called \u201cMamon.\u201d By expanding on the established systems with&nbsp;card battles and randomized elements, the title manages to carve out a unique identity.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"\u300e\u30de\u30e2\u30f3\u30ad\u30f3\u30b0\u300f\u30ed\u30fc\u30f3\u30c1\u30c8\u30ec\u30fc\u30e9\u30fc\" width=\"1160\" height=\"653\" src=\"https:\/\/www.youtube.com\/embed\/C5YjMI8--uw?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p>The title is Yoshinama\u2019s passion project. Though a beginner in game development, his go-to attitude and willingness to create his dream game despite there being no guarantee of success caught the attention of LiTMUS game director Yu Totsuka.&nbsp;&nbsp;<\/p>\n\n\n\n<p>After juggling game development and investing 25 million JPY (roughly $160,000 USD) of his own money into the project for roughly two years, Yoshinama has every right to be overjoyed at the game\u2019s \u201cVery Positive\u201d reception on Steam. It has also <a href=\"https:\/\/x.com\/yosi980\/status\/1999302614350237886?s=20\" target=\"_blank\" rel=\"noreferrer noopener\">come to his attention<\/a> that Mamon King has become the third most-downloaded Nintendo Switch game on the <a href=\"https:\/\/store-jp.nintendo.com\/software\/ranking\/switch\/\" target=\"_blank\" rel=\"noreferrer noopener\">Japan My Nintendo Store<\/a>, behind Pok\u00e9mon Legends: Z-A and Inazuma Eleven: Victory Road.&nbsp;<\/p>\n\n\n\n<p>Mamon King is available on Windows (<a href=\"https:\/\/store.steampowered.com\/app\/4030290\/Mamon_King\/\" target=\"_blank\" rel=\"noreferrer noopener\">Steam<\/a>) and Nintendo Switch.&nbsp;&nbsp;<\/p>\n\n\n\n<p><strong>Related:\u00a0<a href=\"https:\/\/automaton-media.com\/en\/interviews\/japanese-streamer-turned-game-dev-on-why-he-invested-160k-into-a-niche-passion-project\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u201cI don\u2019t care if it doesn\u2019t sell, I just want to make the game I want to make\u201d Japanese streamer-turned-game dev on why he invested $160k into a niche passion project<\/a>\u00a0<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>To the elation of Japanese YouTuber Yoshinama, his debut indie game Mamon King is seeing impressive sales on Steam and Switch.<\/p>\n","protected":false},"author":67,"featured_media":54925,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_gspb_post_css":"","footnotes":""},"categories":[62,3],"tags":[17],"class_list":["post-54919","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-indie-games","category-news","tag-japan-related-news"],"blocksy_meta":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - 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