Games like X-COM: UFO Defense on Linux
3 of the 5 modern alternatives to X-COM: UFO Defense (1994) run on Linux. One of them is free, and the cheapest paid option is XCOM: Enemy Unknown at € 14,99.
Linux is unusually strong for classic gaming, because the open-source engine ports that keep old games alive were often written on it. Native builds are common for anything using a community engine, and most of the rest runs through Proton, which is the same technology that powers the Steam Deck.
Prices, platform availability and Steam Deck compatibility can change at any time. Always check the store page before buying.
XCOM 2
€ 49,99The acclaimed modern reboot with deep tactics and strategy layers.
XCOM 2 runs on PC, Mac, Linux, iPhone, iPad, Android phone, Android tablet, PlayStation, Xbox, Switch. It is Steam Deck Verified.
XCOM: Enemy Unknown
€ 14,99The 2012 reboot, and the only modern XCOM that also runs on phones and tablets.
XCOM: Enemy Unknown runs on PC, Linux, iPhone, iPad, Android phone, Android tablet, PlayStation, Xbox. Not available on Mac, Switch. It is Steam Deck Playable.
OpenXcom
FreeA free, open-source engine reimplementing the original (game files required).
OpenXcom is also an alternative to 1 other classic
OpenXcom runs on PC, Mac, Linux. Not available on iPhone, iPad, Android phone, Android tablet, PlayStation, Xbox, Switch, Steam Deck.
Not on Linux
These alternatives to X-COM: UFO Defense are listed on the main page, but do not run on Linux:
All 5 games like X-COM: UFO Defense