🛠️ My Party Is Grindingのアップデート履歴
開発元がSteamで公開した公式告知（パッチ、新コンテンツ、イベント）を時系列でまとめています。タイトルをクリックすると全文を読めます。
2026年9月
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9/6日📢 お知らせHell Difficulty Opens Today & Server Restart
Hello, everyone! Hell difficulty opens today. During this server restart, we will also address an issue that prevented some items purchased from the Steam Community Market from being claimed through t…
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9/2水📢 お知らせUpcoming Stage Difficulty Adjustments
Hello, everyone. Thank you for sharing your feedback regarding the recent changes to stage difficulty and clear times. Why Some Stages Feel Harder We confirmed that some skill effects had remained act…
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9/1火📢 お知らせSteam Community Market Opens This Week & Upcoming Updates
Hello, everyone! The Steam Community Market for My Party Is Grinding will open this week. We will announce the exact opening time separately. Free Trade Vessel Slots Free Trade Vessel slots unlock bas…
2026年8月
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8/27木📢 お知らせMy Party Is Grinding Is Now Available!
Hello everyone, The day is finally here—My Party Is Grinding has officially launched on Steam! The full version is now available, and you can begin your adventure today. Thank you for your patience du…
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8/21金📢 お知らせSteam Playtest Ends Today — Full Release on August 27
Thank you to everyone who joined the My Party Is Grinding Steam Playtest! Your bug reports and feedback helped us complete our final checks and improve the game before release. Steam Playtest ending A…
出典：Steam公式告知（6～24時間ごとに更新）。タイトルと概要の著作権は各開発元に帰属します。