- On the sea below the adventure map, you can find the entrance of Extreme Challenge: a tower located in a dangerous sea.
- You can begin the extreme challenge after completing Adventure Chapter 6.
- The extreme challenge requires five heroes to be dispatched for a match-3 battle. After completing one level, you can proceed to the next.
- Some levels have special rules, such as only heroes of a specific color can enter the challenge.
- You'll get the rewards of each level only once. Every five levels, you'll have more valuable rewards.
- You can view the results of each player through the leaderboard at the top right of the screen, as well as the formation for each one.