1. Metal Gear Solid 4 (PS3)
2. Metal Gear Solid (PS1)
3. Street Fighter II Turbo (Snes)
4. Call Of Duty 4 (360)
5. Grand Theft Auto: San Andreas (PS2)

1. Super mario 64 (N64)
2. Legend of Zelda OoT (N64)
3. Phantasy Star Online: Episode 1&2 (GC,XBOX)
4. Super Smash Bros. Brawl (Wii)
5. Resident Evil 4 (GC,Wii,PS2)

1.) Pokemon Gold Version (GBC)
2.) Super Mario Bros. 3 (NES)
3.) Fire Emblem (GBA)
4.) Super Metroid (SNES)
5.) Super Mario 64 (N64)

1. gran turismo 3 (ps2)
2. Legen of zelda mayoras mask (n64)
3. Starcraft (pc)
4.tetris(all)
5.Street fighter 2 (all)

1.Final Fantasy 7
2.Metal Gear Solid 4
3.FFIX
4.FFX
5.SMRPG Legend of the seven stars

1. Half life (pc)
2. God of War (ps2)
3. Grand Theft Auto: San Andreas (PS2)
4. LBP (PS3)
5. 1. Metal Gear Solid 4 (PS3)

1.)Super Mario World - SNES
2.)Super Mario 64 - N64
3.)Pokemon Gold/Silver/Crystal
4.)Resident Evil 4 - Gamecube
5.)Legend of Zelda: Windwaker - Gamecube

This is my shot at an un bias list. Every game on my list is a genre-defining, 95% game. The one's that aren't just weren't reviewed. However, most would agree that they're some of the best of all-time.

1. The Legend of Zelda: Wind Waker (GC)
2. Super Mario Galaxy (Wii)
3. Okami (Wii)
4. Metroid Prime (GC)
5. Skies of Arcadia (GC)

1. Super Mario 64
2. Legend of Zelda: Ocarina of Time
3. Grand Theft Auto: San Andreas
4. Sonic Adventure
5. Gears of War 2

1. Civilization II (PC)
2. NetHack (PC)
3. Super Mario Bros. (NES)
4. Bubble Bobble (Arcade*)
5. The Sims 2 (PC)

*PC if arcade's not allowed. Alternatively, your choice from any one of a dozen or more platforms.