X3 was released five months later in October. A month later, they demonstrated the power of the " X3 Reality Engine" in May's Electronic Entertainment Expo (E3), stunning industry insiders with high-definition moving renders of space stations, planets and other scenes. In April 2005, Egosoft announced that X2: The Return was cancelled and that the game, using the new X3 Engine, would become X3: Reunion. However, as the project advanced, it soon outgrew the constraints of the X2 Engine. X3: Reunion began as project X2: The Return, Egosoft's planned extension for X2: The Threat. The X series is often compared to the classic Elite, in that these first-person space adventure games focus on trade and exploration, as well as combat.
The game has been ported to Linux and Mac OS X Mac OS X for release in August 2007 the Linux version followed on December 5 2008. X3: Reunion was released on Octofor Windows, Linux and Mac OS X and on Novemin North America.
It is the third installment in the X universe adventure video game series and the sequel to X2: The Threat (2003), which in turn followed X: Beyond the Frontier (1999). X3: Reunion (Trademarked as X 3: Reunion) is a single-player space trading and combat game developed by Egosoft and published by Deep Silver.