Game|Life's Chris Kohler played the wacky reinterpretation of Galaga found on the new Namco Museum Remix, and somehow came out of it cogent enough to describe the surreal experience. Basically, Pac-Man is rolling down a slide in space, for some reason, and players have to protect him by shooting the Galaga ships that come down to attack him for some reason. You aim at the little ships with the Wiimote pointer. If Galaga '88 was Galactic Dancing, this is Galactic-- okay, we don't know what it is. We're still pretty confused about the whole idea.
Kohler also played Rally-X, which was basically a 3D remake of the original arcade game (which itself is basically Pac-Man). While Galaga is rife with Wiimote integration, Rally-X is more staid and relies on the analog stick and shoulder buttons.