Very bad indeed. Filling in the puzzles is cumbersone, and Kakuro puzzles all require alot of guessing.

User Rating: 2.4 | Sudokuro DS
Filling in the puzzles is truely annoying. You use the D-pad or touchscreen to select a square, and then tap a number on the touch screen to fill it in. There's also an option for writing down the numbers, but I've not yet managed to get it to distinguish between a 6, 8 and 9 consistently. Also, there is no way of making notes in the boxes. You can either fill in your digit, or not. No way of noting "maybe" or "possibly" like in Brain Training Sudoku.

The Kakuro puzzles, even at easy, have no solid 'start', like the Kakuro's you do in puzzlebooks. They all require guesswork to start off.