Have fun with Alpha Centuari? Just looking for another Civ? Earth is ruined, and mankind has fled. Build your civ and control the future of humanity.

Civ, always a classic. One of the best known 4x turn based strategy games, massive replayability and fun with friends makes this a must buy for 4x fans.

Design a ship, explore the universe, do it with friends. Die. Space engineers is all about the ships, and about the experience of building them.

Quite possibly the pinnacle of historic real time strategy based games, Europa Universalis is a personal favourite and quite frankly unbelievably fun.

A great realistic third person shooter. Although the graphics haven't aged well this game is a pinacle of squad gameplay and realistic firefights

A small and fun game that is currently in Beta. Involves lot's of hidden strategy with ship building and combat while maintaining a pleasant atmosphere.

A great 4x space turn based strategy game. Has many unique mechanics and is different from well know Civilization or Galactic Civilizations.

This game puts the simulation and realism into Realistic Flight Simulator. Best combat flight sim i've played with the exception of one or two AAA games