Since the game isn't out in the west until June, most people probably won't consider getting it until then. I can only assume you *cough* bought it from an import site.

If you did in fact buy it from an import site and you did *not* buy Arkanoid DS at the same time or previously, you're missing out on one of the DS version's exclusive features. The game already supports the rumble pak, but a version of Arkanoid came with a Paddle controller that also works with Space Invaders.

For the rest of us though, the game's out in June.