Steam Description:

The Sequel to the award winning X²: The Threat introduces a new 3D engine as well as a new story, new ships and a new gameplay to greatly increase the variety in the X-universe. The economy of X³: Reunion is more complex than anything seen in the X-universe before. Factories are being built by NPCs, wars can affect the global economy, NPCs can trade freely and pirates behave far more realistically.