Morkin wrote:How about Pullblox which has received very positive reviews? (I've got it, but not played it that much)
I'm in a minority because some people seem to love it, but I'm honestly not that taken with Pullblox at all. It's a decent enough game, but very slow paced and gets very boring fairly quickly...severe lack of variety in it and music that gets annoying after a short amount of time (think there's only 1 or 2 tunes as well?). On saying that, I do keep going back to it for some odd reason and it's quite a lengthy game, plus you can create your own puzzles and scan new ones in so maybe it's just me.
Personally, I'd plump for one of Wayforward's games (Mighty Flip Champs and Mighty Milky Way on DSiWare, or Mighty Switch Force on 3DSWare), or a couple of the better DSiWare puzzlers like Reflect Missile or PicoPict. Dodogo! is also well worth a look, Space Tank 3D (crappy title) is a very good Starfox style shooter with a nice art style, and Go! Go! Kokopolo! is a great little maze chase game with a hefty challenge in it as well.