RaceRoom

RaceRoom is the premier free-to-play racing simulation on PC and home to official race series like DTM, WTCC, and ADAC GT Masters. Enter RaceRoom and enter the world of a professional race car driver.

Want to know more? Visit raceroom.com

Several DLCs were released to increase the racing experience:
 * RaceRoom - DTM Experience 2013
 * RaceRoom - DTM Experience 2014
 * RaceRoom - ADAC GT Masters Experience 2014
 * RaceRoom - DTM 1992 Car Pack

While the basic game is free-to-play, the DLCs come with a price.

Please, read more about DLCs and their pricing on STEAM