The Onion once ran a spoof about a new expansion to World of Warcraft that lets your WoW character play WoW. If only it were ridiculous enough to be fiction.

The game Combat Cards was initially created as a virtual card game that you play within the online virtual reality world Second Life. Your character stands on the screen as you draw cards and then acts out the cards you play. Like real-world CCGs, you had to buy packs of combat cards to play. The mechanics are a souped up version of RPS.

Combat cards has now jumped into real life, and you can now get physical cards to play with. You can get them free print-and-play, or buy them in packs.