Here is my design for a Number cube I call it the "Zero Cube".

I wasn't going to post this, as this was just a result of me messing about. But I'm curious if this mod has been done before?

Essentially, you want all faces to equal "0". To make things slightly easier you can solve this with edges first and all of the edges equal "0" and then you can concentrate on the corners afterwards.

I have included 2 identical edge pieces and obviously all centres are the same so you would encounter a couple of parity issues.

I'm not very mathematical, so I would appreciate people telling me its a stupid idea, I had a comment from a friend of mine saying that it could very likely have multiple solved states but I don't see that myself.

Is this uninteresting as puzzles go?

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If I had any electrical engineering experience (say that very fast 10 times) then I would have liked to develop an electronic cube which had hidden values in the pieces and a LED number panel in the centre. You would have to try and get every centre to equal "0" through trial and error.

All comments appreciated.

ADDITIONAL: My original cube had orientation which made it easier to solve so, with the advice of Andreas Nortmann & Madartilect, I have changed to the above cube but my original is below so you can understand why they posted the below replies

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