It was off to the aptly named Spin-Dig galaxy to take the drill for a ... spin. (Hear that? It was me ducking.) Using this device, Mario can drill straight through the game's spherical worlds (and even some flat ones), a mechanic best demonstrated when I used it to reach a Launch Star perched atop an otherwise unreachable summit. To get to it, I had to drill in just the right spot, which sent me spiraling up through a tower of sand on the flip-side of the world. Once there, a few steps to the right and another use of the drill took me back through the world and up to my destination. Tricky, but very satisfying.
At the end of this stage, I went up against a two-legged robot straddling a wheel-shaped circular world. It launched drill robots at me, which I stomped, but there was no getting past its legs ... or was there? It soon gave up how I could beat it: By waiting for its glass-domed, star-containing head to rotate around, allowing me to line up and drill all the way through the planetoid, popping out the other side and cracking the glass with my drill bit.
Hopping over to another galaxy -- this one featuring "2D" gameplay akin to that found in the first SMG -- I whacked a familiar green-spotted egg to free Yoshi. Hopping on his back added a subtle (yet hallmark) bongo beat to the soundtrack and I quickly made with using his tongue to pull in enemies and power-ups. Controlling him worked really well; like with Mario, moving around is accomplished via the Nunchuk's analog stick. The Wiimote pointer is used to "aim" his tongue, with B making it dart out. I had him eat a fruit that made him blow up like a balloon, floating upwards by means of air escaping his mouth. Pressing A made him hold his breath, though the air meter still depleted (albeit more slowly). In this level, strategic swallowing of said fruit was a necessity -- as one wore off, I had to snap up another in mid-air to keep from plummeting to the ground.
A boss fight here let me use Yoshi's penchant for pitting back what he's swallowed to my advantage. Another metal monstrosity, this thing launched Bullet Bills at me, which I promptly had Yoshi gobble up and spit right back at it. I kind of regret not trying the same trick on the Hammer Bros. earlier, to see if I could perform a "return to sender" on their menacing mallets.
All in all, the Super Mario Galaxy 2 I played today felt, looked and sounded just like the original game -- it'd just learned some neat new tricks. I don't know about you, but that's just fine by me.