Microsoft:
Gears of War: Ultimate Edition - 82
Forza Motorsport 6 - 88
Halo 5: Guardians - 90
Rise of the Tomb Raider - 87
Fable Legends - 77
Below - 85
Inside - 85

Sony:
Until Dawn - 70
Tearaway Unfolded - 83
Disgaea 5: Alliance of Vengeance - 80
Dragon Quest Heroes: The World Tree's Woe and the Blight Below - 78
Tales of Zestiria - 74
The Tomorrow Children - 82
Persona 5 - 92

Nintendo: (providing insights)
Super Mario Maker - 90 - A game that feeds on nostalgia to the vast public with a lot of flair, virtually unlimited content.
Rodea the Sky Soldier - 70 - ehh...seems like a mediocre game.
Chibi-Robo! Zip Lash - 80 - Supposedly has depth, so I'll give the benefit of a doubt, but lacks charm and flair.
The Legend of Zelda: Triforce Heroes - 82 - Since it's so multi-player focused, there's bound to be problems that'll definitely be docked points. It's also Zelda, so yeah.
Xenoblade Chronicles X - 95 - if XBC could get a 92 with horrible graphics standards, and XCX keeps the vein of its previous game, it can easily be GotY contender
Star Fox Zero - 81 - It definitely harkens back to the 64 days where it's cherished to no end in addition to a lot of flair. However, motion controls is bound to have some degree of flack and will get punished for once again ANOTHER re-imagining of Star Fox 1.
Animal Crossing: Amiibo Festival - 50 - The Mario Party series barely get above 60s nowadays, maybe even below in certain entries. From what I've seen from GameXplain discussions, it seems a more boring, worse version of Mario Party and with the whole backlash, it's definitely not breaking 60.

Multiplatform:
Metal Gear Solid V: The Phantom Pain - 92
Mighty No. 9 - 82
Lego Dimensions - 80
Assassin's Creed Syndicate - 78
Call of Duty: Black Ops III - 83
Star Wars: Battlefront - 85
Just Cause 3 - 85

Mad Max - 80
Tony Hawk's Pro Skater 5 - 64
Tom Clancy's Rainbow Six Siege - 85
Need for Speed - 78
Fallout 4 - 91
XCOM 2 - 88
Hitman -80

Either we're all right or we're all wrong amirite?

Exactly my point! Ain't nobody gonna be a rebel haha

I can I just predict for one company, or do I have to guess for all games? (I haven't even heard of some of those games..)

Edit: Just saw the rules, so I'll be tagging for now..

Tagging. Predictions to replace this soon!

Microsoft:
Gears of War: Ultimate Edition - 84
Forza Motorsport 6 - 86
Halo 5: Guardians - 84
Rise of the Tomb Raider - 83
Fable Legends - 76
Below - 80
Inside - 85

Sony:
Until Dawn - 81
Tearaway Unfolded - 87
Disgaea 5: Alliance of Vengeance - 78
Dragon Quest Heroes: The World Tree's Woe and the Blight Below - 81
Tales of Zestiria - 76
The Tomorrow Children - 82
Persona 5 - 92

Nintendo:
Super Mario Maker - 88
Rodea the Sky Soldier - 71
Chibi-Robo! Zip Lash - 76
The Legend of Zelda: Triforce Heroes - 84
Xenoblade Chronicles X - 86
Star Fox Zero - 80
Animal Crossing: Amiibo Festival - 63

Multiplatform:
Metal Gear Solid V: The Phantom Pain - 93
Mighty No. 9 - 87
Lego Dimensions - 82
Assassin's Creed Syndicate - 80
Call of Duty: Black Ops III - 70
Star Wars: Battlefront - 85
Just Cause 3 - 86

Mad Max - 78
Tony Hawk's Pro Skater 5 - 68
Tom Clancy's Rainbow Six Siege - 84
Need for Speed - 80
Fallout 4 - 94
XCOM 2 - 89
Hitman - 76

edit. XCOM 2 is in

How can anyone think Until Dawn will score well? That looks way worse than The Order. At least the order has great graphics.

I agree with this list the most so far. I think Rise of the Tomb Raider will be a little higher, but not much.

Microsoft:
Gears of War: Ultimate Edition -  82
Forza Motorsport 6 -  91
Halo 5: Guardians - 86
Rise of the Tomb Raider - 85
Fable Legends - 73
Below - 80
Inside - 82

Sony:
Until Dawn - 66
Tearaway Unfolded - 81 
Disgaea 5: Alliance of Vengeance - 83
Dragon Quest Heroes: The World Tree's Woe and the Blight Below - 72 
Tales of Zestiria - 73
The Tomorrow Children - 67
Persona 5 - 87

Nintendo:
Super Mario Maker - 88 
Rodea the Sky Soldier - 64
Chibi-Robo! Zip Lash - 68
The Legend of Zelda: Triforce Heroes - 82
Xenoblade Chronicles X - 83
Star Fox Zero - 79
Animal Crossing: Amiibo Festival - 78

Multiplatform:
Metal Gear Solid V: The Phantom Pain - 92
Mighty No. 9 - 79
Lego Dimensions - 76
Assassin's Creed Syndicate - 77 
Call of Duty: Black Ops III - 80
Star Wars: Battlefront - 82
Just Cause 3 - 84

Mad Max - 77
Tony Hawk's Pro Skater 5 - 71
XCOM2 - 85
Tom Clancy's Rainbow Six Siege - 79
Need for Speed - 81
Fallout 4 - 90
Hitman - 78

Microsoft:
Gears of War: Ultimate Edition - 89
Forza Motorsport 6 - 79
Halo 5: Guardians - 93
Rise of the Tomb Raider - 88
Fable Legends - 63
Below - 70
Inside - 59

Sony:
Until Dawn - 62
Tearaway Unfolded - 90
Disgaea 5: Alliance of Vengeance - 69
Dragon Quest Heroes: The World Tree's Woe and the Blight Below - 71
Tales of Zestiria - 73
The Tomorrow Children - 88
Persona 5 - 87

Nintendo:
Super Mario Maker - 66
Rodea the Sky Soldier - 71
Chibi-Robo! Zip Lash - 33
The Legend of Zelda: Triforce Heroes - 77
Xenoblade Chronicles X - 69
Star Fox Zero - 77
Animal Crossing: Amiibo Festival - 51

Multiplatform:
Metal Gear Solid V: The Phantom Pain - 95
Mighty No. 9 - 78
Lego Dimensions - 64
Assassin's Creed Syndicate - 74
Call of Duty: Black Ops III - 85
Star Wars: Battlefront - 91
Just Cause 3 - 85
Mad Max - 69
Tony Hawk's Pro Skater 5 - 60
Tom Clancy's Rainbow Six Siege - 79
Need for Speed - 77
Fallout 4 - 94
Hitman - 66

You have LEGO Dimensions twice...

EDIT: XCOM 2 -- 77