Red Crystals

 a limited-time currency available during the Game of Games 2019 Event. They used during the Act 4 main questline Fourscore and a Halfmonth, and the total is only visible there. The counter resets after each stage of the questline and earned do not carry over from one part to the next.

How to Obtain
obtained in the following ways:
 * Sending characters to their limited-time jobs at the E4 Convention Center or Conflict of Enemies Indoor Stage basically 8  per one finished job.
 * In comparison to Act 3, two new non-premium characters earn event's currency: Apu, and Cletus. Instead of other two characters from Act 3 who don't: Lenny, and Carl. There is one new premium character with jobs earning : Stick Up Walrus, instead of Mr. Dirt from Act 3.

Jobs
Jobs that earn (non-premium / premium characters):

Prizes
US$