Question about Blue Spheres extra mode

[molul]

Are all stages randomly generated? Or did they just make a lot of stages?

I'm really happy that they added this mode, also with Taxman's new ideas that were supposed to be in S3&K remastered. 

On the other hand, I would have loved if they added a small feature for the medals list in "Extras": to be able to navigate through the medals and see a preview thumbnail of the level.

I still have like 18 gold medals to obtain, so I have a plan for this weekend

[Seyonix]

I believe the Blue Sphere modes stages are procedurally generated

[molul]

I thought so. It's interesting development-wise, but usually it takes a couple of attempts to clear a blue spheres stage, so it's a little bit weird.