im going to lay it all out there...
but first ground rules..
i liked HL but it is through and through a PC game thus it can not be picked
this includes all of Orange Box (portal is my favorite game ever)
for the same reason i count out CS (no pun intended)
"best" in my book means..
quality of game play (sp and mp)
replay value
and sheer amount of fun to be had
by these rules my number 1 over all pick is none other than the legendary and immortal HALO:Combat Evolved
it had absolutely everything anyone can ask for
AMAZING campaign both single and co-op both are challenging. all of the weapons were balanced well and although the person with the rockets or sniper or shotgun was someone to be feared these were not super weapons like in so many other games see as how each of these people could be defeated by most of the other weapons. and also the vehicle physics (which were amazing) spawned their own custom game types...which brings us to mp...
In my mind it had and has the best multiplayer EVAR i mean you just cant get any better than an all night 16 person LAN with massive epic battles of CTF on sidewinder or massive no shield sniper battles on hang-em-high. I have seen no other game where you get so much joy out of single epic frags like the infamous falling no scope sniper headshot for the win. and I believe it was the first game with sticky grenades not including mines in 007 and TS
As for replay value in single player I have played through that game so many times that I lost count about 3 years ago plus when you ad co-op its the kind of game that you can play for hours.
This game has been out since 2001 and it is still to this day one of my favorite games to play.
a few random little things to point out are the outstanding maps, the fact that they used the health system (i mean really what happened to health?), and the grenades just the fact that you could throw them like the genetically-altered-super-human-rapped-in-the-mjolnir-armor that you were.
Halo just offers so much and does not disappointed in any area at all
Now...all of that said there are many other FPS that i liked a lot but do not fear they wont get the same treatment as halo
So...in no particular order
For multiplayer i like:
1.Goldeneye/Perfect Dark:
basically the same game with a few difference but i like them each the same however they are past there prime and as was stated earlier in the thread they arent as fun anymore
2.Timespliters 2:
possibly one of the only games (pre-halo) the trumped goldeneye for sheer fun and craziness if I still owned it I would still play it. also half-way descent map-editor
3.Halo 3:
I really enjoy this game and i like playing online but too me its just not as good. Halo 2 isnt worthy to be shat on let alone played. in my opinion there just needs to be a Halo 1.5 that we can play online (basically halo for PC only not as laggy and without the PC)
For campaign i liked: (in addition to the above games which i liked for their sp as well)
1.Call of Duty 2:
i beat it on veteran and there is no greater sense of achievement in the world than salying the 1000's of Nazis it takes to do so. CoD3 is the same game just alot bloody harder and CoD4 was way way over hyped and underdelivered its the same as all the others only bad...and i the future with diff guns...i mean really who cares about a nuke. not me
2.Metroid Prime:
in my opinion and although its been stated several times this was one of the best console games out with some of the best gameplay and it look beautiful (great water effects)
3.Black:
Loads of fun to play through once or twice but i got a little old. Had great weapons and you could totally shoot grenades in mid flight which was FTW but loosing the remaining rounds in the mag when you reload is its biggest downside
XIII,Killer 7,Bioshock and Rainbow6 Vagas weren't bad either
and who could forget duckhunt the original FPS
In conclusion:
Halo:CE=super massive epic win of destiny
Halo 2 and CoD4=are the smelly bloody after birth of some great games
one last little tid bit has anyone ever heard of or played a game for the original X-box call Pariah?? that game was truly epic and gets my vote for "Best game no one ever played"
If you have comments, queries, want to argue you point with me, or know something i may have missed i welcome all comments and criticisms but for the love of all that is holy don't use the quote feature to copy my whole post.