The problem is sales. No company is going to stop making sequels unless they perform below expectations/no longer show a profit. The consumers are the problem as a majority of the time they don't accept new IPS. Obviously there are exceptions (Uncharted, Gears of War, Assassins Creed) but for every big success there are multiple failures.
Anyways, for me?
#1 Call Of Duty Series
#2 Halo Series (Love Halo but it needs to take a few years off. MS won't allow it however.)
#3 Any yearly sports game (Madden, Fifa, NHL, etc.)
#4 Need For Speed
#5 The Warriors Series (Samurai, Dynasty)
#6 Silent Hill (The news just seem to be getting worst and worst. Series needs a rest.)
#7 Basically any game that gets yearly renditions.
I'm giving Assassins Creed a new chance with the new setting, but I have a feeling it will be on this list next year.
It's just that simple.
