Rise

"Experience over 100,000,000 km of seamless reality in an accurately simulated extra-solar system. Use ground, air, and space vehicles and structures to discover and develop sprawling urban cities, rain swept valleys, vast uncharted deserts, and glittering alien seas. Freely climb to space to take part in physics-accurate orbital maneuvers as the economic and social frontiers expand to interstellar commerce and travel. Colonists arrive and thrive in the world that YOU are helping to establish. Ready to RISE?"" - Official Site.