Does 18G's of all mame games sounds about right? I found a download and I wanted to make sure I'm not wasting my time and get something thats not complete.

sounds a bit to complete if you ask me,you will have all the clones and majhong rubbish in there as well.

not sure just i know its 18Gs it better have them all not sure i have to download it to find out huh?

The Mame 0.128 set without chd's is 20GB. I have it sitting in front of me. It's easy enough to filter out any games by genre and remove them if you don't need them

Get rid of the clones and bootlegs (except for a few special purpose clones). Unless you're a collector and a completionist, roughly 2/3rds of that 18GB is useless to you.

i was going to fliter what I didnt want, however I just thought 18G's seemed small to me i those mame would be in the higher 20's