During a turn, if you have your Challenge Coin, you can use it to take an effect. You can only use it once per game.
Only one Challenge Coin can be played per turn, so if one has been played, another card must be played before another player can play theirs.
When a player plays their Challenge Coin, turn the Challenge Coin determining the direction of play over.
Coin 1-6: Play challenge coin to change the direction of play.
Coin 7: When played the direction of play does not change. Instead, the person currently taking their turn gets another turn! (Only available to Kickstarter backers).
Coin 8: Stay tuned, coin 8 is in the works!