Which brings us to the question of whether Blizzard could actually do this. Boffo says he'd shell out $10 to play this game, while other people say they'd spend as much as $30 to actually see it on retail shelves (or, more likely, as a download). The game looks like a version of Asteroids more than anything, and the trailer (on purpose, probably) don't really make it clear what the rules are. But it looks simple enough to put together -- maybe a weekend's work by a dedicated coder with some MC runs under his or her belt.
Instead of a release, though, it'd be more fun to see this implemented as a minigame somewhere. We already know that Blizzard is planning to do some mobile work, so maybe they could release this as a fun distraction for the iPhone while planning something bigger. Incorporating it into the main WoW game somewhere would be a fun possibility as well. I can't think of any other time when a Blizzard 4/1 joke actually made it into real life (Two-headed ogres aren't actually playable yet), but they might as well start here, right?