Jon Stokes at the Opposable Thumbs blog relates his experience using Google Wave as a platform for Dungeons and Dragons
— the true test of success for any new communications technology. A post at Spirits of Eden lists some of Wave's strengths for gaming
"The few games I'm following typically have at least three waves: one for recruiting and general discussion, another for out-of-character interactions ('table talk'), and the main wave where the actual in-character gaming takes place. Individual players are also encouraged to start waves between themselves for any conversations that the GM shouldn't be privy to. Character sheets can be posted in a private wave between a player and the GM, and character biographies can go anywhere where the other players can get access to them. The waves are persistent, accessible to anyone who's added to them, and include the ability to track changes, so they ultimately work quite well as a medium for the non-tactical parts of an RPG. A newcomer can jump right in and get up-to-speed on past interactions, and a GM or industrious player can constantly maintain the official record of play by going back and fixing errors, formatting text, adding and deleting material, and reorganizing posts."