What are your top 3 favorite FPS games of all time?

My pick would be:

Single:

1- Mirror's Edge

2- Portal

3- Riddick

Multiplayer:

1- Counter Strike series.

2- Battlefield series.

3- Halo series.

Honorable mention: Star Wars Jedi Knight: Dark Forces II and Metroid Prime

can't decide on my top 3... some of my favs

TF2, COD1 - COD4, BF2- BF4, KZ2, Half Life Series, Resistance1-2, L4D, Rainbow Six Vegas, The Darkness, Doom2, Unreal Tournament 2k4, Halo Reach, BF:BC, Counter Strike & CS:GO, Crysis and a few more !!!

1. Half-Life (as a series)

2. No One Lives Forever (as series)

3. Bioshock (as a series)

Honorable mention: Wolfenstein The New Order, Far Cry 1 and 3

Halo CE

Return to Castle Wolfenstein - Original Xbox

Wolfenstein TNO

Far Cry 3

Metro Series

Half Life 2

No order:

Half-Life 2 1/2

No One Lives Forever 1/2

STALKER: SoC

I couldn't choose between the sequels really and I didn't really consider online focused FPS.

No love for Wolfenstein

halo 4 metro last light resistance 3

Doom 2

Shadow Warrior Remake

Painkiller

Eh, Halo 1, 2 & 3 sounds good to me. :P

1. Timesplitters: Future Perfect

2. Doom

3. Duke Nukem 3D

Wolfenstien 3D

Medal of Honor Frontline

Unreal Tournament 2004

1.Bioshock Infinite

2.Half LIfe 2

3.Doom

1. Half Life series
2. Counter Strike series
3. Stalker series

1. Blood

2. Stalker ( which of the 3 can go either way )

3. Between Duke nukem, battlefield 1942/ BF2, Unreal tournament 99 and Metro 2033 i cant decide

i have to look at my list but from what i can remember

1. call of duty 4 : modern warfare
2. counter strike (pre 1.6)
3. portal

Halo:CE (my favorite co-op & overall multiplayer in the entire series, with a great campaign on top of all that)

Doom 1/2 (first one has better level design, second one has the shotgun, no way to pick. Fantastic games to play wen you're burned out on everything els. They remind me of how much fun i can have wile playing games)

Half Life (i prefer it over the second one by a quite a margin)

1. Call of Duty: Modern Warfare 2
2. Call of Duty: Modern warfare 3
3. Call of Duty: Black Ops

1. Halo 1

2. Halo 2

3. Halo 3