There are a few first-person shooters that can be played in a web browser using Flash or Java. If you want decent graphics, however, you will need to download or purchase one.
Yes, try quake live.http://www.quakelive.com/
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No i have download many skins never had a virus :)
Download an FPS Config
I find a reasonable game (It is hard to find a great online FPS without downloading) to be a game called Russia's Army. It has 8 player online with a selection of weapons and a nickname. You can find it here: http://www.gamevial.com/russiasarmy.htm
Red crucible 2 is pretty boss
fraps has a demo the new one is 3.03 i had demo i when to a web forget web sorry but you can download the full version but is illegal the might caute u be carfull now how to use it for slow mothin use 5000 or 1000 fps and normal 30 fps 100 fps 20 fps 29.29fps and more and full screan + record vista get a better graphic card get some tut here or slow mothin for 1000 fps or 5000 fps
Russias army from gamevial is pretty fun.
you have to disable the backround (make it black). download (gh3boost) which will make the backround black then install it and your fps will increase by a lot
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the best fps in my opinion is called halo trial you get campaign and multiplayer also you can download really cool mods you get the game at download.com get on the Internet and try it out the game is really fun
phosphor and paintball paradise