Although most board games are designed for a physical environment, some lend themselves to computerized versions very well. For example, Risk is a popular turn-based war game that involves many dice rolls and piece movements. When played online, these can be automated, making for a much faster and engaging game. Chess has long been played online, as has backgammon, Scrabble and Cluedo. When played online, however, some of the sociability of playing is necessarily lost.