This expansion requires the base game Heat: Pedal to the Metal to play.

Heavy Rain introduces two circuits full of twists and turns that will put the best drivers to the test. The Japanese Grand Prix is being held immediately after torrential rain and large puddles have formed in front of some corners, reducing your ability to slow down. The gruesome Mexico circuit offers an exhilarating experience with its multiple chicanes requiring speed and skill.

Additional events and improvements

The expansion also offers new events for the 1964 Championship and an innovative system of Air Intake improvement cards to cool your engine more efficiently and triumph over the dangers of these new circuits.

Heavy Rain also allows an additional player to join the race.