1. Any number of players can join a challenge at the same time.
2. The winner is the player who first completes the target multiplier.
3. Rewards are credited in Coins and added to the player’s account immediately after completion.
4. Each challenge has a specific slot and a target multiplier (X).
5. All multipliers collected in the selected game are summed — once the total reaches the required X, the challenge is closed.
6. Challenges have no fixed time limit — as soon as one ends, a new one begins automatically.
7. The player list is displayed on the challenge card; you can view your current position in real time.
8. Each challenge can be completed only once per player.