🛠️ Borderlands 3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10月
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10/2金🎉 イベントCozy Up with 2K: The Autumn Sale is Live on Steam! Save Big Through Oct 8.*
https://clan.fastly.steamstatic.com/images/4128336/66a2bcaddd03b0f7481eaf24a784f4e18d4652b7.jpgAs the leaves turn and the crisp autumn air settles in, that familiar feeling returns: the golden hour af…
2026年9月
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9/11金🎉 イベントBorderlands 4 Free Play Weekend and anniversary sales happening now!
Now's the time to team up with new and veteran Vault Hunters alike for a badass blitz of looter shooter action during the Borderlands 4 Free Play Weekend* and first anniversary sale**, live now!You an…
2026年7月
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7/2木🎉 イベントSave big on Borderlands 4 during Steam Summer Sale
For any Vault Hunters who haven't crash-landed onto Kairos in Borderlands 4, now's the perfect time to jump in for more mayhem-fueled looter shooter action! Borderlands 4 is currently 50% off for a li…
2026年6月
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6/26金🎉 イベントTime to Play: The 2K Summer Sale is Officially Live on Steam
The 2K Summer Sale is officially live on Steam, and it’s the perfect excuse to find your next great escape. Summer is about having the time to truly immerse yourself, dive deep into a world, and remem…
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。