Which introduces another interesting question:
Is "for sale" good enough or shouldn't at least one copy be sold? And how about games that where never sold but only available as gifts/bonus?
My question is, how many games does the AA store sell of certain good games?
A good rule of thumb(or maybe not?), would be a game that sells 50 special edition games, then sells 50+ regular release games at AA or some other online venue.Then you could assume the title has gained homebrew status by 1-being programmed,not hacked & 2-has sold 100+copies, thus making it popular.