Some 3D games have aged very well. Blizzard has figured it out. Take a look at WOW.

Since they are shooting for cartoon, and not realism, they can use a visual style that was developed the better part of a decade ago. Poly count matters less, and things like adding bloom or reflections or weather and so on matter much more.

Come to think of it, TF2 and Wind Waker pulled the same trick.