🛠️ XCOM：未知敵人 更新紀錄
開發商在 Steam 發布的官方公告：修補檔、新內容與活動，依時間整理。點標題看完整內容。
2026 年 10 月
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10/2五🎉 活動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 6 月
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6/26五🎉 活動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…
2018 年 9 月
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9/26三🎉 活動XCOM Retrospective - Legacy Devs Livestream
https://steamcdn-a.akamaihd.net/steamcommunity/public/images/clans/4128336/1b6a8012298ed451b9d061d3f6d8278ad4e31137.jpg XCOM: Enemy Unknown turns six years old on October 9. In the weeks leading up to…
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9/20四🎉 活動XCOM Retrospective Livestream
https://steamcdn-a.akamaihd.net/steamcommunity/public/images/clans/9756027/7a8aad72cab7b42836dbadb5666ed6b0162b64cf.jpg XCOM: Enemy Unknown turns six years old on October 9. We're kicking off the cele…
資料來源：Steam 官方公告（每 6～24 小時更新）。標題與摘要版權屬於原開發商。