Skip to 1:10Endless Space seems to have it all. A compelling story, which features an ancient super civilization, several factions to choose from, a big emphasis on discovery (powerful artifacts left from precursors), luxuries and strategic resources management, a tech-tree system, trade, diplomacy, state-of-the-art graphics, modular spaceship design, customized civilizations setup, an innovative and dynamic simultaneous turn-based gameplay, multiplayer, different victory conditions, an hero-character system with unique ability trees and specializations… Check here for all about the features and all other game info. There’s an interesting thread in Amplitude’s forums that talks a great deal about the game design features also.
http://www.endlesspace.com/