C&C Red Alert
This is an older RTS game that has been released for free by the studio. In its time, it was one of the most amazing RTS games ever created. You fight on the side of the Allied or Soviets through a wide variety of missions ranging from standard destroy the enemy base to commando missions. The balance and different types of units you find on the two different sides is pretty solid. One of the unique things about the C&C franchise is the live cutscenes, and this game is no different. A fun game to pickup if you want to relive the glory days of the C&C franchise.