Galactic Civilizations II and Sins of a Solar Empire: Rebellion made PC Gamer's list of the best strategy games! Check out the complete list here: http://www.pcgamer.com/the-best-strategy-games/  

This mod stays in the universe of the original, but adds hundreds of changes to create new ways to play this much-loved strategy game. You’ll experience new factions, abilities, and strategies in this mod. Extended 4X comes with special hero units, new and rebalanced planet types, embassies, random encounters, a new ship upgrade system, deeper civic and planet upgrade mechanics, and much more. Check out the video here!