X-COM 2 도 윈도우용으로 따로 나온게 있나요?

UFO2000 is free and opensource remake of tactical part of 'X-COM: UFO Defense' game. It currently has no geoscape and economics, but it has the feature many X-COM fans dreamed for - multiplayer support

You need data files from the original X-COM to play UFO2000. The game can also work with data files from X-COM demo (microprose ftp is currently down, mirror of this file is here), but you will be only able to play on 'City' map and use a limited set of units in this case. So having a full version of X-COM is highly recommended.

UFO2000 is written in portable C++ and is known to compile and run on Linux, FreeBSD and Windows (with the exception that it is still not 64-bit clean and endian neutral as nobody of us has access to non x86 hardware)