People don't just stop playing Facebook games. They divorce them.
The main way to reduce stress in the workplace is by picking the right people.
One of the main things that's appealing about games is that you know a game can be won. It's an unusual game that's impossible to win.
A game is a problem-solving activity, approached with a playful attitude
To be connected to the real world is healthy and important.
Who cares and who doesn't care about a project, is going to shape the project in a significant way.