Toon-Doku

Toon-Doku is a sudoku game for Nintendo DS which attempts to substitute the
numbers used in the original game for colorful images. The game features 99
custom sudoku puzzles widely ranging in difficulty, 9 different avatars, and
246 different images to substitute the numbers with. The game is fully
customizable, allowing the player to choose not only his or her own avatar,
but the background skin, music tracks, as well as all 9 of the symbols used to
play the game (the game doesn’t force the player to use images, one can choose
to use numbers). Furthermore, the player is given a choice to draw his/her own
unique set of symbols.