What are some good pc games online or single player i dont care?

I have fallout3,callofduty4,halo,gta sanandreas, and pure

im looking for games that are action,shooter or even racing

im looking forward to the realise of prototype but while im waiting i need a new game to play and i have no idea what to get.

Also i dont like free games unless there really really good cause usally when i play a free game it gets boaring within 2weeks.What are some good pc games online or single player i dont care?
Yes! One of the BEST online games ever! Planet Cazmo! You can create your own 3D character, (called a Cazmo) you can customize it in so many ways, and buy Cazmo Cash and/or membership for it to get some neat items and features! There are also multiple programs that players can pariticpate in, example: Cazmo Cadets! and more! There are quests, where you can earn sweet clothing and rewards! Why they call it Planet Cazmo... Well its a whole PLANET! You can explore SO MANY places! It's also VERY safe and moderated. Moderators come on very often and they are awesome! When one is not in plain sight, they are undercover, you are ALWAYS being watched! So there is no bad behavior, and if there is, the player gets punished. Planet Cazmo is for a huge group of ages, mainly teenagers. You can chat with your friends, and make new friends! People from all around the WORLD go on Planet Cazmo. Come and join today!!What are some good pc games online or single player i dont care?
C%26amp;C Red Alert 3 is a good game. The Campaign is long and online play is a laugh. You should check it out. GTA 4 is online, try that too.What are some good pc games online or single player i dont care?
Definitely check out Left 4 Dead and Team Fortress. They got really good reviews.
get Fear 2

Single player is very good