Kongregate is trying to create “the leading online hub for players and game developers to meet up, play games, and operate together as a community”. Currently in Beta; Kongregate already hosts 553 games, and has hundreds of gamers playing together at any one time. Though anyone can submit a game, a user rating system ensures that only the best games float to the top of the charts. In addition to regular playability, each game is wrapped in community features such as chat and challenges that allow you to play alongside your friends. Plus, developers receive a share of the microtransaction and advertising revenue, and retain the full rights to their games, so they are encouraged to write up some good stuff. If you’re looking for a place to kill some time, Kongregate is it.