Really well-done puzzler. The idea of the gradually decreasing contrast, which means you have to remember the location of certain blocks, is brilliant. You introduce it smoothly, and the puzzles implement it very well.
At times it does get a bit fiendish. I gave up near the end of level 5.
Also--the WebGL did not work for me, I had to download. Which version of Unity were you using?
Thank you so much for the kind words, it meant a lot to me that you noticed the effort I put into introducing the mechanic :)
I used 2020.17f1 and did some fanciness with custom postprocessed shadergraphs in URP to get the 'color removal' effect. I've heard that URP, 2020 and WebGL don't play well together, but I waited until too long into the jam to realistically downgrade or fix (I tried, but I could tell it was going to be a fruitless time-suck).
Lesson learned: build early and often.
