It's my port of SquarO to Nintendo DS.
SquarO is a single-player casual game with a touch of Sudoku and Minesweeper. You can play Squaro for just a few minutes whenever, wherever you want to, even when you are waiting for your laundry to be done!

How to use:

Sinmply, put it in your flashcart and enjoy wherever you want. All controls with stylus.
Download
Source-neoflash