Stephan let us know about his release of Minesweeper Reloaded for the BlackBerry PlayBook. As far as I can tell the game is built on WebWorks and runs nicely on the PlayBook. The gameplay follows the classic Minesweeper rules with the developer hoping to add multiplayer and audio effects in future updates.
You can pick up Minesweeper Reloaded free in App World or even try it free in Google Chrome at this link