Ok big points here to whet appetites. (keep in mind that I haven't really gotten to see everything yet. )
-The game is played by dragging blocks up and down within each column, trying to connect horizontal or vertical rows of blocks (three or more of the same kind). When you connect the blocks they launch everything above them into the air. If there's too much weight above them, they'll begin to descend, and you'll need to drag another matching set to the bottom row to gain more lift. The goal is actually to launch your blocks and destroy the opposing planet on the upper screen.
-Various bits of music are triggered whenever you launch blocks, the stack gets high, blocks descend - pretty much anything that causes motion on the screen causes music to play, making for an interactive audio experience.
-Each planet has different skins for the blocks, as well as different music/effects. Also, different dynamics to your lift. Some planets are harder to get lift on, others may be easy to get lift, but the CPU will quickly pile on more dud blocks weapons like smoke bombs to obscure your view.
-Smash Bros. style on/off switches for your favorite weapons.
-Weapons and music selections available for purchase from a strange variety of points you collect.
-Four play modes, including a branching path through the planets, time attack, etc.
-Four player single card multiplayer.
-Did I mention awesome music and opening FMV?
-You can still play the game on the lower screen while the credits are rolling on the top.