Today, the classic titles from the space simulation series X were published on Good Old Games.
The games released include X Gold (X: Beyond the Frontier with the X-tension expansion pack), X2: The Threat, X3: Reunion and the standalone expansion pack X3: Terran War Pack (which consists of Terran Conflict and Albion Prelude). The more recent X: Rebirth is not included but then again, it’s not like anyone wants to play it.
The X series can be bought here. Each of the games is at 50% discount right now and if you buy them all, you only pay 25% of the usual price.