Any games you'd like to see, I am happy to add. Perhaps I need to look at a better way of handling editions than totally separate games. In the meantime, you can also use the "Other" game option and mention what system it is in the description. I'll take a look around at BoardGameGeek and some other data sources to see if I can expand the catalog.
My thought is at the minimum you should be able to say "X RPG, any edition" and "X RPG, these editions only" - my thought is a lot of people would play AD&D 3rd and 5th editions but not 4th, or at least they say that online :)
Relatedly you can have campaign settings as well, AD&D certainly has several but the official/custom split potentially applies to any game with its own setting. Could just be handled by tags though.
