I suppose this makes sense. During an economic downturn, when surplus cash is in short supply, people are going to be looking to get more bang for their buck. Rather than taking expensive vacations, or buying fancy but short-lived toys, people may instead turn towards games which are a cheap source of entertainment and potential centerpieces of social engagements. According to this article, boardgame sales rose 2% in 2008 which is in stark contrast to most other industries which contracted considerably.