Quoted from DS_Nadine:Srsly?
Cornerstone: 3 „Mass Market“ main games a year -> Pro/ Premium/ LE
B66, Beatles and Elvira have no Pro and and only the Sky is the limit for pricing... but they do a Premium, so that‘s ok.
Pretty good explanation, though Elvira isn't Kapow. I believe "Studio" is the term they are using for non cornerstone games that are full featured, coin-op games. Kapow are considered Studio games.