Alpha Centauri GoG torrent

Mankind begins its most monumental task – the colonization of space. A crew of internationally renowned scientists and security strategists, with wide-ranging convictions and diverse ethics, embarks on a mission that will change the world. One Planet. Seven unique factions. Which will you lead? Each faction has its own agenda, each leader a final goal. You must play to each strength and exploit each hidden weakness in your quest to rule the future.

Minimum system requirements: Windows XP or Windows Vista, 1.8 GHz Processor, 512MB RAM (1 GB recommended), 3D graphics card compatible with DirectX 7 (compatible with DirectX 9 recommended), monitor/display supporting 800x600 resolution, 2GB HDD, Mouse, Keyboard.

It's from GoG, just install and enjoy!