HAPPY SUDOKU

Downloadable communications software for connecting sudoku puzzle game players, sudoku online games, sudoku player communities; Downloadable electronic game software for use on mobile devices and personal computers; Downloadable mobile applications for sudoku puzzel games with various sudoku difficulty levels, sudoku notes mode, sudoku hints, sudoku smart hints, sudoku night mode, sudoku undo, sudoku daily challenge, sudoku badges; Recorded computer gaming software for recreational game playing purposes