Good game flawed by major software bug.
Otherwise, the graphics are good on the eyes, which is all you need in Sudoku. The sound is actually peaceful and helpful for concentration. Endless puzzles with ability to download. Cheaper at $30. BUT...wait...it does not matter BECAUSE IT HAS A MAJOR BUG. Folks, do they really test these games. Oh, I'm sorry....Ubisoft says the error is not as bad when the PSP is plugged in. Gee, thanks. I can play Sudoku on my computer plugged in. Duh.