Currently Phoenix Wright: Dual Destinies, although I don't like it as much as the previous installments. I just don't dig the Apollo or Athena characters. Only done the first 2 cases, so I hope the others are more Phoenix-centered.
And Picross DS, completed it a few years back but just reset it last month and started playing again. Really love it. Should try Picross 3D when I'm doing with this one.