This app is based on a fast Sudoku solver I wrote a while ago and I thought maybe I should do something with it. Sudoku Forever is yet another Sudoku puzzle game available on Google Play. Sudoku Forever features a random puzzle generator that generates each new game on the fly. This allows for a virtually limitless number of Sudoku puzzles available. Features: Random puzzle generator providing a virtually endless number of puzzles. Three difficulty levels (defaults to easy). Automatically saves game state when exiting. Unlimited undo/redo. Save/Load game slots. This app supports all phones and tablets (that I'm aware of, there are just so many!) from Android 2.3 and up. Here are a few screenshots. The link to Google Play: https://play.google.com/store/apps/details?id=com.fourthwoods.sudoku Let me know what you think. All feedback and especially bug reports are welcome. Thanks, Dave.