The difficulty setting is for Vs. Computer. I can crush Game-Level 1 but Game-Level 8 beat me 2-0. Existing run can be presumed to be Game-Level 1.

Let's keep the best of 3 default option. Looking at fighting games with 1-8 difficulty levels, they have categories for 1, 4 and 8. I think we should do the same.

What I'm not sure is if each opponent plays any differently. Each one you beat puts a crown on their head. I don't think beating them all makes sense as a category, unless it can be shown they do play differently.

Oh wait, each opponent has a different, distinct stage with the initial bubble colors being random. Defeating all 8 would be a legit category. Easy stages good for level 1 difficulty and I found that not to be the case for level 4 since the opponents can keep up.

You can continually reshuffle the bubble colors by going back to menu and selecting the same opponent. I think that's a fair strategy and not always a good one when harder AI has an easy time clearing the initial bubbles as well.

So long as the category is for beating 1 opponent, I guess you can reshuffle as much as you want and keep restarting the time.