Shortly after beating the game, I was able to get myself a few Extra Visions to play. So for me debating whether to see if it's worth it or not, I went for it, as I tried to be as determined as I can.
I was barely able to beat the one of the Extra Visions, which was really tough, and took me quite the amount of time to beat that one Extra Vision, for about more than 30 minutes. Don't ask, I'm a rather slow thinker when it comes to puzzle platformers. Anyways, the other Extra Vision has gotten me super confused on what to do. I thought I wasn't playing around with some schematics, so I can use them to progress, at least from what I think I was missing.
So... after about 45 minutes to an hour of trying to beat that 2nd Extra Vision, I wasn't able to do so. I simply have given up for some time now.
Now, I'm unsure if I can continue the Extra Stages.
Note: I was playing on an Emulator on mobile. The controls on the mobile are pretty sloppy, making the already hard Extra Vision harder. Maybe it was just me.
But possibly, I might go back and try again later.