Wired: Magic: The Gathering, the oldest and most popular trading card game on the market, went digital in 2002 with MtG Online in a very successful operation that eventually garnered an estimated 300,000 accounts. Now, with Duels of the Planeswalkers it's hitting the console market.
So, who are the Planeswalkers? I mentioned the ultra-powerful sorcerers dueling each other, right? Bingo. Last year the Planeswalkers Duel Decks were released, premade card sets tuned to the personalities and abilities of two Planeswalkers, Jace and Chandra. Because they're already formulated with a single concept (e.g., all Red spells and monsters) they're pretty much ready to play, taking some of the learning curve out of the game.