Every 2 days I'm going to put up a new poll for a VG franchise for 3 or more games. You as the voter willhave to decide which game is the best. 

*The highest rating I will ever give a game is 9.7 (Only one game ever got that rating) so bare with me if you think I'm too harsh.

Killzone 

My opinion: 

Killzone 3: 8.3

Killzone 2: 7.9 

Killzone Shawdowfall: 7.5

I don't like the rest

VGC users: 

Call of Duty:

Call of Duty Modern Warfare: 8.8 (Legendary game and no doubt one of the best FPS games to date)

Call of Duty Modern Warfare 2: 8.5

Call of Duty World at War: 7.6

Call of Duty Black Ops: 7.5

Call of Duty Modern Warfare 3: 6.4 

Call of Duty Black Ops 2: 6.2

*Haven't played enough of COD Ghosts yet.

*COD 4 dominated by a HUGE margin so there was no point in showing

Grand Theft Auto:

GTA V: 9.7 (BEST GAME EVER)

GTA SA: 9.2 (6th gen rating, lost some of its relevance over time)

Updated Rating: 8

GTA VC: 9.2 (6th gen rating)

Updated Rating: 8

GTA III 9/10 (6th gen rating)

Updated Rating: 7.1

GTA IV: 8.7/10 (Bad freeroam but great MP, and story that lasted quite a while!)

GTA Vice City Stories 8.4/10 (6th gen rating)

Updated Rating: 7.4

Forza

Forza - Haven't played

Forza 2 - haven't played

Forza 3 - 5.9 (I thought it was a downgraded version of GT)

Forza 4 - 6.4

Forza Horison - 6.2

Forza 5 6.8 (Best in the franchise and only one that's actaully quite decent)

Gran Turismo 

GT1: - Too small to remember

GT2: 8.7 (Best racing game for its time)

Updated Score 7/10

GT3 9.1 (Also best racing game BY FAR for its time)

Updated Score 8/10

GT4: (Didn't play this one too much but it was great from what I can remember)

GT5: 9.1/10 (Best racing game ever the only problem I have is the damage)

GT6:  8.1/10 (This is an early score after playing this game for almost 9 hours now) Waay too similar to GT5.

Killzone 2 is 10/10
Killzone 3 is 8/10
Killzone SF is ?/10

what does the....? mean

Killzone 3
Killzone 2
Killzone
Killzone: Mercenary

Yet to play Shadow Fall or Liberations.

That it's so bad, I cant score it. LOL Joking. It means that it launches in Sweden in about 22 hours and 45 minutes from this post. I'll be there on midnight to get it and play xD

Mercenary. It's not epic, but the gameplay is just perfect.

Of the ones I've played (1-3) Killzone 3 wins by a landslide.
It's free of the drunken aiming and boring environments that let the first two down, and it supports pointer controls.

Didn't play enough to say, from the ones I played KZ3. Couldn't finish the first KZ because of the horrible controls, the analogs were so fucking far away from precision that FPS's on PS2 were terrible, besides Black of course, I don't know how Criterion managed to pull of amazing graphics, physics and gameplay from next gen in that game...

I only play single player and for now it's KZ3 over KZ2.
The first few levels in KZ SF top both for me but I have not finished it yet. The sound is so good I only want to play it when I have the house to myself and can give my 1200 watt surround system it's raison d'être.

Its a great game..I don't own it or a PS4 for the matter but I played the whole SP campaign and some of the MP at my friends house. The SP is a total letdown but the MP is fantastic. And why such a low score for KZ3? It had a great MP mode did it not?