Adding games into MAME and other emus'

OR something like that, is what I should have titled this.

Anyway. I'm curious about the steps people can take to re-add games that were removed, or add unsupported games, etc. In MAME or other Various Arcade emulators.

I tried googling but got kind of lost and could find no real FAQ for this type of thing

There are some extra games available in mame but you need to enable them in the source code as they are still test drivers and re-compile it.

As for adding new games you have to edit the source code again as long as you have a driver. I hope you know C++

bah fucking humbug.

Try searching for "MAME More!". An illegal binary of mame that supports the extra games you want.