I usually don't pay them any mind; and only played them when I was in 7th grade and Facebook had just started to become popular. However, there was on called NinjaTrick that was a browser-based game that was also hosted on Facebook. It is honestly the funnest browser based game I have ever played and I would love for it to come back. Unfortunately, the game was shut down due to some copyright infringements, but it was such a great game.