Nerds

So you all know that I love to play card games...right? Well tonight I supposedly learned a new game called Nerds. But it's just like Dutch Splits or a version of Speed. So my thought is perhaps there are only a few card games but hundreds of names associated with each. Why is that? Is it region of country (and since I've lived all over that would explain my diversity if you will?). Or is it generational? Any thoughts...