The X-Card is a tool that allows any player (including the GM) to remove content from the game. This traditionally appears in the form of a physical card, marked with a large letter X, that is placed within reach of all players at the table. That said, a table can represent the X-Card through a different item, creating an X with their arms, or using another agreed-upon signal.

To utilize the X-Card, a player only needs to tap the card (or use the agreed-upon signal) and note the moment of play they wish to “rewind” to. It can help if the player notes the detail they’re flagging for removal, but this is not a requirement for using the tool. The group will simply go back to the designated moment and play forward, making a new choice.