1. Metal Gear Solid
2. Crash Bandicoot
3. Gran Turismo
4. Uncharted
5. Jak & Daxter
6. Battlefield
7. Grand theft Auto
8. God of War
9. LittleBigPlanet
10. Rollercoaster Tycoon :P
Honorable Mentions:
Bioshock
Call of Duty (Recent games ruined the franchise for me)
Forza Motorsport
Ratchet & Clank
Medal of Honour