I got it soon after it launched on the eShop, it's addictive! I'm about halfway through. Oh, and I think the European 'Pullblox' > the US 'Pushmo'. :p
Also, all those complicated user-made character designs look fabulous, but I got one question... are they actually playable, or just there 'cos they look good?
Anything that has a QR code is playable - the editor won't provide a QR code for a design unless you played it through successfully.
Currently Playing: Shin Megami Tensei: Devil Survivor Overclocked, Professor Layton and the Curious Village
Anticipating: Xenoblade, The Last Story, Mario Kart 7, Rayman Origins, Zelda SS, Crush3D, Tales of the Abyss 3DS, MGS:Snake Eater 3DS, RE:Revelations, Time Travellers, Professor Layton vs. Ace Attorney, Luigi's Mansion 2, MH TriG, DQ Monsters, Heroes of Ruin