1. HALO!!!!!!

2. COD
.
.
.
.
.
12. ooops, I meant 3. KZ2

.................... I own all 3 by the way.

Played Halo on xbox, average game, didn´t like it much.

Waiting for a pricecut on Killzone 2.

Call of dutty is my favourite of all FPS series, all great games, except COD 3. COD modern warfare is the best of the series.

Also love Doom, Quake, Serious Sam, Half Life and Resistance series.

1. KZ2 (tad better than the first game huge improvement)

2.Cod(Good game but story is so short(cod 4) and COD3 was a disappointment IMO...)

3.Halo(I like playing split screen competetive thats about it the story mode I didn't really like)

EDITED*

1: Halo
2: Cod
3: Killzone

The main reason I put killzone last is because I don't own a ps3 (you can't enjoy something you can't play). If I had a ps3 I'd put it second because honestly I'm extremely bored of call of duty. Having played it since the first version on the pc, its gotten worse for me with every release.

Halo is probably my favourite fps series (along with half-life) and I've enjoyed every entry in the franchise so the more the merrier for me.

1. HALO


2. MODERN WARFARE
3. KILLZONE (I bought it new at release... then exchanged it a few weeks later at the store)

4. CALL OF DUTY (...so last gen)

1. KZ2
2. COD4 (Modern warfare is the only COD game I enjoyed)
3. Halo

1-KZ2
2-call of duty 4 and 5

don't like halo or resistance or unreal at all.

Halo.

Halo
COD
KZ

Halo...

I would pick other games to fill out 2-5.