🛠️ XCOM：未知敌人 更新纪录
开发商在 Steam 发布的官方公告：修补档、新内容与活动，依时间整理。点标题看完整内容。
2026 年 10 月
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10/2五🎉 活动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🎉 活动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🎉 活动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🎉 活动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…
数据源：Steam 官方公告（每 6～24 小时更新）。标题与摘要版权属于原开发商。