I just played Endless Space and finished almost till the part where I have eight planets under my rule. I liked this game and it was an awesome experience. I got a different experience from usual strategy games. This game was different from all other strategy games and I liked the concept of this game. I think I will try other games that are similar to Endless Space, I mean 4x game with Sci-Fi theme. Can someone tell me similar 4x games that are available in market and are close to Endless Space?