That's hard to say, especially with the lack of mmofps games. Probably Combat Arms.
Halo 2
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
One game on Facebook that is a FPS game is Paradise Paintball or now known as UberStrike Another one I know of is Brave Arms I hope this helps and red crucible
thegamecreators.com has a lot of game development tools that anyone can use, online, 2-D, FPS and much more.
if it isnt satellite or dsl then yes its an amazing speed for any online game
First Person Shooter are currently a popular type of online game . Some free FPS games are Team Fortress, Combat Arms, Warrock, Ghost Recon, AVA, and Counter Strike.
quakelive.com is one of the easiest fps online PC games that you can play.
FPS games that can be played online include Crossfire and Eve Online. FPS games are also sometimes known as MMORPG games and are very popular with all ages.
Everyone can play operation7 that are over 18+. It is a great fps online game If you want to play just go to the link below.
It would have to be FPS because FPS games are more interactive
Despite popular belief, Wolfenstein 3D and Doom were not the first FPS games in history. An FPS game called Catacomb 3D predated these two games. It was the first ever FPS game in existence. But you used magic, not firearms. It was an OK game. Released for PC and NES (maybe more).
No.