Recommended games:
Sudoku Falls
Sudoku Falls places sudoku against peaceful waterfall background imagery.
Drupple Sudoku
Simple, elegant sudoku
White Sudoku
Sudoku with stylish scalable graphics, puzzle generator, editor and other useful things
Picma Squared
Picma Squared is a picture logic game. The goal is to discover the image hidden within each puzzle by following a couple of simple rules and using nothing but logic.
It features 28 puzzles, an easy to use, colourblind-friendly interface and a comprehensive Help section. In addition, it is the only puzzler of it's kind to offer the challenge of multi-coloured puzzles.
Samurai Sudoku
Play Samurai Sudoku's online in 3 difficulty levels.
Wiidoku
Sudoku designed to work in the Wii browser