It looks like I didn't save my feedback, so I'm going from memory, and might be missing some of my initial impressions:

First impression:
- The textures are nice, it looks very clean.

Mechanics easy to understand? How can the be improved
- Yes.
- I think more mechanics would be nice. I'm not a fan of a maze with no twists. I see that you mention doing more with it and think that would be a good decision.
- I really don't understand the block chain portion for stat tracking, though I imagine it could be a really cool application. I could see it turning players off if they suspect it being used for nefarious purposes. Since it's not a standard (to my knowledge) practice, adding an explanation of what exactly is happening and how it works might be beneficial.

Is it challenging without being frustrating?
- I personally got lucky and ended up taking the right turn every time, so it was very easy. So my perspective of the challenge is probably not accurate.
- I do think it would become frustrating if I got lost for any significant amount of time, since there isn't much to engage with and it's not my kind of thing to being with.

Tutorial/onboard:
- It's fine, unless someone has never done a maze before, I can't imagine you'd need anything more than what you have.

How well is it optimized:
- I didn't notice any issues.

2D Squares are evolved to the 3D cubes. This makes the game already better than the most games on the generic Jams.

Core mechanic is simple as it couldn't ever be. No improvements are possible nor needed. 

You can add textures to the shapes in the future updates, tho.

I like the visuals, good first game
Not sure what the crypto mining/wallet thing was about
Time trial games are always fun just needs a few simple mechanics to keep people engaged