April Fool's jokes. Many MMO studios, bloggers, and fan site operators are lining up to take a shot at the jester's crown today, hoping that their blatant (and entertaining) lies will at least amuse, if not trick, players.
It would be fool-hardy (har har) to try to round them all up, so suffice it to say that office clowns have been quite busy thus far. From Star Wars: The Old Republic's announcement of playable ship droids and City of Heroes' offer of ludicrous marketplace sales to Blizzard's focus on educational kids games and StarCraft 2's playable supply depots to SOE scaring visitors with Chatdy, the gags are flying fast and furious. We might be the most impressed with a deeply detailed wiki entry for a Guild Wars mission called Annihilator 2: Searing Day, during which players are sent into the past to save Gwen from the G-1000.
If you've spotted any other pranks, please share them in the comments!