Team Fortress 2

Often overlooked, Team Fortress is an online, free to play FPS. However, don't let the "free to play" fool you. It's a great game. And for those of you who really want to spend money on all of your games, you can upgrade your account to premium so you CAN spend money on it.

It is often called bad because it has a more cartoony style then things like Halo. But personally, that's what I like about it.

So far, there are 9 different game modes:
Arena
Capture the Flag
Control Point
Attack/Defend
King of the Hill
Payload
Payload Race
Territorial Control
Special Delivery
(If you really want to know what each game mode is, look it up. I'm not in the mood to write it all down here.

Each game mode has several maps (Excluding SD. It has only one.). The game itself has over 50 maps in total.

If you are as big of a TF2 nerd as I am, this is a topic for you.