Rittai (3D) Picross is AWESOME. I love it. I've done 140 puzzles so far (but I've restarted them many many times because I redo them until I get it perfect (3 stars/no misses). It seems to have 300 main puzzles and other assorted puzzles. It is pure perfection. It is all in Japanese (but with picture tutorials) and can be easily imported for $45. Worth -every- penny and more.