The series overall has a pretty good cross-platform story:
- The original DOS versions run well on DOSBox from what I've heard, although I've never tried them personally.
- There's also a re-implementation of the game engine in the form of OpenXcom [1], which supports UFO Defense and TFTD (there's a separate version for Apocalypse around somewhere). Requires the original assets but includes a lot of small changes over the base game that make it less annoying to play overall, in addition to not requiring DOSBox.
- The Firaxis games both have native versions. I can't currently get stock XCOM 2 to run due to library link issues (the joys of running on an unstable distro), but both Enemy Unknown/Enemy Within and War of the Chosen run fairly well.
- The original DOS versions run well on DOSBox from what I've heard, although I've never tried them personally.
- There's also a re-implementation of the game engine in the form of OpenXcom [1], which supports UFO Defense and TFTD (there's a separate version for Apocalypse around somewhere). Requires the original assets but includes a lot of small changes over the base game that make it less annoying to play overall, in addition to not requiring DOSBox.
- The Firaxis games both have native versions. I can't currently get stock XCOM 2 to run due to library link issues (the joys of running on an unstable distro), but both Enemy Unknown/Enemy Within and War of the Chosen run fairly well.
https://www.ufopaedia.org/index.php/Installing_(OpenXcom)