In terms of industry impact/legacy/longevity and sales impact ...
1. Super Mario (various)
2. Grand Theft Auto
3. Pokemon
4. Legend of Zelda
5. Madden NFL
6. Mario Kart
7. Halo
8. Final Fantasy
9. Call of Duty (hate to say it)
10. Metal Gear Solid
Honorable mentions: Gran Turismo, Street Fighter.