Supreme Commander (Series)!

OpenRA is an open-source reimplementation of Westwood’s Command & Conquer: Red Alert game engine, updated to use the hardware acceleration of modern video cards using OpenGL.

Dune Legacy is an effort by a handful of developers to revitalize the first-ever real-time strategy game. The original game was the basis for the hugely successful Command and Conquer series, and the gameplay has been replicated an extended to a wide variety of storylines and series. Lead one of three interplanetary houses, Atreides, Harkonnen or Ordos, in an attempt to harvest the largest amount of spice from the sand dunes. Exchange your spice stockpiles for credits through refinement and build an army capable of thwarting attempts of the other houses to stop your harvesting! »

Mental Omega is a free unofficial expansion pack for Command & Conquer Red Alert 2 Yuri's Revenge. It started off as a balance modification created by Speeder and Mevitar and first released in 2005. After a few years, it had grown into an unofficial sequel with new campaigns for the Allies, Soviets, and Yuri. Version 3.3 marks the end of the long road and the final upcoming release of Mental Omega.

Spring:1944 is a WWII themed game based on the open source Spring Engine. Our goal is to create four fully functional sides (US, Germany, USSR, Britain) with period-accurate units and strengths. Realism is a primary design goal, second only to creating a game that is fun and accessible to play.

Do you want epic battles?

As a provincial governor charged with spreading the glory of Rome your mission is clear – build cities, foster trade and industry, make money. How you accomplish this is up to you. Gain wealth and power, make a career out of pleasing the emperor, battle barbarians and repel invaders, or concentrate on building the next Eternal City. Fail and you'll end up as lunch for the lions. Prove your strength of mind and spirit and you just might be crowned Caesar!