We may not have paperless offices yet, but old-time pencil-and-paper pastimes have gone digital with a vengeance. The Web has made everything from the venerable New York Times and Times of London crossword puzzles to such popular favorites as Jumble, Boggle, Sudoku, and Pictionary as handy as the nearest browser-equipped PC. Following are a dozen challenges that might persuade you to sacrifice a little Facebook and Twitter time.
Looking for more fun with your PC? Start by checking out our gaming blogs: Darren Gladstone's Casual Friday and Matt Peckham's Game On. Then wander through our review of free game sites. Looking for a crossword to solve on your iPhone? Read about two good iPhone crossword apps, courtesy of our friends at Macworld.
And if you're feeling guilty because you're reading this at work, you'll be relieved to learn that some companies are finding that allowing employees to play games at work may improve their productivity. So there!