Then I found the X - card. It's just a card with an X on it that you can use to indicate when you're uncomfortable with content in a game, and it. Gelöst: Kann ich zu einer bestehenden XTRA - Card eine Zweitkarte mit gleicher Rufnummer bestellen?. We've learned a lot about the X - Card since this original document was published. Till we have time to update this entire doc, we will share the latest here. The Latest · What's most important about · Does the X-Card make a.