Loved the dedication to the "control twiddling" feel. The controls really did feel like a bank of mysterious knobs and buttons to mess around with.
The figure eight ended up getting me in the end. I looked up figure eight fourier transform and all the results I got were academic articles with titles like "the figure eight solution".
That's some pretty intense difficulty you've got there.
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Thanks for the feedback! :)
To be honest the levels where actually made exactly like you are solving them, by twiddling with the controls ;)
I got the eight randomly and thought it would fit in with the other ones. But I have to agree, it's really hard to recreate. Most people seem to get stuck there. We probably should have put the eight farther to the end of the levels.