A Challenge Round is a set of 6 Challenge Missions. When you complete 3 Rounds in a Challenge, you earn 1 Challenge Round Pass.

In your challenge menu, you can see both the total number of Rounds you have completed and the number of Challenge Round Passes you have earned.

1 Round Pass allows you to skip 1 Round at the beginning of the next challenge. These rounds are skipped automatically when the challenge starts, and all of your Round Passes earned during the previous challenge are consumed.

Every skipped round allows you to earn double amount of stars and trade goods rewards in the following round. So for example, if you earned 2 round passes last week and normally start the challenges at Difficulty 10, you will skip straight to Difficulty 12. You’ll also get double stars and Trade Goods for the first two Rounds you complete.