If you are looking for the most stable and "clean" version of the game, the is generally recommended as it removes the need for third-party launchers or cracks entirely.
Here is the current status of the game across different platforms and versions: XCOM: Enemy Unknown Crack Status
: The major expansion, XCOM: Enemy Within , is also fully cracked and usually bundled with "Complete Edition" or "Elite Edition" releases found on repack sites. If you are looking for the most stable
: Cracked. The game was cracked by groups like RELOADED almost immediately upon release in October 2012. The game was cracked by groups like RELOADED
: The game uses standard Steam DRM . It does not use more intrusive technologies like Denuvo, which is why a permanent crack has been available for over a decade.
: Because it is an older title, it is frequently on sale for very low prices (often under $5) on Steam and GOG . The GOG version is DRM-free , meaning it requires no crack or activation to play.