It seems that you're using an outdated browser. Some things may not work as they should (or don't work at all).
We suggest you upgrade newer and better browser like: Chrome, Firefox, Internet Explorer or Opera

×
Until/if ever the Linux version comes to GOG, you can use Lutris to install the Windows GOG version. There's an installer script at https://lutris.net/games/xcom-enemy-unknown now for the Lutris library and I tried it, it works fine!

You can also ask the company that made the linux version of XCOM to release it on Gog.
Post edited January 24, 2019 by Loaderini