I'd award 10/10 to exceptional games that have stood the test of time.

Mario 64
Super Mario World
Deus Ex
System Shock 2
Thief 2
Zelda: Majora's Mask
Zelda: Windwaker
Quake
Duke Nukem 3D
Half-life
Grim fandango
Phoenix Wright: Ace Attorney
Command and Conquer
Super Metroid
Chrono trigger

There might be many newer games that qualify but time will tell.

Grand Theft Auto V
Grand Theft Auto: San Andreas
The Last of Us
Resident Evil 4
Red Dead Redemption

I guess The Legend of Zelda: Ocarina of Time, but I was far too young back then. Though I'm sure I would've loved it.

FF VI
FF X
TWEWY (very biased)

1989 - Super Mario Bros. 3

1991 - Super Mario World

1998 - Metal Gear Solid

1998 - Gran Turismo 2

2001 - Grand Theft Auto III

2002 - Grand Theft Auto: Vice City

2004 - Metal Gear Solid 3: Snake Eater

2004 - Grand Theft Auto: San Andreas

2004 - Ratchet & Clank: Up Your Arsenal

2005 - Resident Evil 4

2007 - Metal Gear Solid 4: Guns of the Patriots

2009 - Uncharted 2: Among Thieves

2010 - Red Dead Redemption

2013 - The Last of Us

My 10/10 masterpiece is:

Garth Marenghi's Darkplace

Ratchet and Clank: Up Your Arsenal HD and A Crack in Time
Uncharted 3
Resistance 3
MGS3 HD

I have a lot of 8s and 9s as I only keep my absolute favs and most replayable but those ones stand out.

I'll just put them in the order i played them:

Super Mario Bros 1
Zelda 1
Super Mario Bros 3
Super Mario World
Doom 2
Street Fighter 2 (the SNES version)
Super Mario 64
Zelda: Ocarina of Time
Diddy Kong Racing
Halo 3
Halo 1

PS2: FFX, FFXII DQVIII + GTA: San Andreas.
PS3: Uncharted 2, AC2, MGS4, TLoU + GTAV.

Resident Evil 4
Super Mario Galaxy
Super Mario Galaxy 2
Banjo Kazooie

• God of War 3 & 2
• Mas Effect 2
• Red Dead Redemption
• Bioshock
• The Last of Us
• Skyrim