World of Warcraft - multiplayer gamesThe latest patch for World of Warcraft includes a new tool for cross-game chat. It's called Real ID.

With Real ID, friends can now chat cross-game, cross-realm, and cross-faction across all supported Blizzard games. In World of Warcraft and need more players for your Icecrown Citadel raid? You check your Real ID friends list to see if anyone's available, and sure enough, a couple of guildmates are playing a 2v2 ranked match in StarCraft II. Real ID makes it easy to ask them to come along.