10 video game series that always deliver

[Gamerace]

Possible #10's

Grand Thief Auto
Fire Emblem
Baldur's Gate (especially if you consider Dragon's Age as it's successor)
Pokemon
Kirby (haven't played them all but enjoy all I've played but then that goes for all of these)
Halo (If you consider ODST an expansion)
Guitar Hero
Just too many....