This game is very quickly unplayable if you make a very good medium game and can't quite beat that score again for a while. This is because each new release is basically a "beat your score or lose" mechanic.

My idea is that the different sizes of games should really have different thresholds for scoring purposes. Maybe you can research "mobile gaming" or something so that your medium and small games have a different "high score" to beat? As a trade-off, the per-unit sale price of a small game would be much lower and a medium game slightly lower than that.

In short, instead of this:

Previous High Score
(Small, Medium, Large, AAA have to beat)

You'd have this:

Previous High Score for Large Games
(Large, AAA have to beat)

Previous High Score for Mobile Games
(Small, Medium have to beat)

How would someone go about making a mod like this? I'm not capable at the moment, though I could try.