Heat: Heavy Rain expansion introduces:
One new driver w/ all essential player specific components in orange (now allows up to 7 racers)
Two new maps (Japan & Mexico)
New upgrade cards (introducing the purple drop – a different cooldown that allows the player to take a heat card from their discard pile and place it back into their engine)
Submerged track sections (must spend an extra heat for down shifting gears in these sections)
More heat, stress, championship, sponsorship, and event cards.