Civilization 5 and Saints Row: The Third are free to play on Steam, starting now and concluding on Sunday, June 9 at 1 p.m. PT. Both games are on sale for 75 percent off, bringing Saints Row: The Third to $10 and Civilization 5 to $7.50. All accompanying DLC is also on sale.

Civilization 5, which launched in 2010, is set to receive the Brave New World expansion in July, introducing new civilizations and mechanics to Firaxis' flagship series. Saints Row 4, meanwhile, is due on August 20 for Xbox 360, PS3 and PC. An elaborate special edition, which includes a dubstep gun, was announced yesterday.

This article was originally published on Joystiq.