No I'm talking about the technical specs of the official AGI games.
KQ2 by Sierra is about twice as large as KQ1, and KQ3 is almost twice as large as KQ3.
The script and scripting became progressively more sophisticated in each. As far as limits in technology at the time would allow.
Check out the KQ wiki for complete (or near) transcripts of each.
KQ8 Law: As an online discussion references or discussing KQ8 grows longer, the probability of a comparison involving it not being a KQ game or not part of the KQ series approaches 1.