At best? Nintendo with their Marios, Zeldas, Mario Karts and Smashs.
But just because they're reusing their popular franchises it doesn't mean they just do the same for every game, Mario games usually have different styles of gameplay (Sunshine, Galaxy, 3D World, etc).
Then at worst? Tecmo Koei's Dynasty Warriors reskinned which play exactly the same for every game but with different series' characters.