Try2Play.com is a source for free flash games, intended mainly for online gaming.
The games are categorized into several categories, like action, adventure, arcade, puzzle, sports, shooting and strategy. As a user-generated content site, everybody is free to submit any game they love and want to share with other people. At the site you will be able to find a list of more than a couple of hundred listed titles, to which new titles are being added all the time. For this reason, it is a great source for those who like to embed games into their social network profiles, blogs or websites, as when you open the game to be browsed, you also get the HTML code to paste in your site. Playing games at this site is free; however you need to register as a member of the site in order to play unlimited times (unregistered users get only two games before they are requested to sign up).