How have I not played this game before?

First, think of the latest in a line of games that set the trend for almost all future fps's. then make it online, then give it constant updates and new toys to play with. now make it all free. that's Team Fortress two. it was worth the money when it was released because it offers competitive play for all skill levels and types of gamer. it has its own economy and continuously growing fan base. the graphics are great (you can barely tell the tf2 is as old as it is), the classes balance well. Oh, and did i mention it's free?

I have played it for about 5 hours so far, and can see me playing it a lot more in the future!