Interesting! I like the concept a lot!! Only criticism I can give at the moment is that some colors are a bit too similar at a glance, like yellow cacti and green blocks. So thats a bit confusing, other than that great job!
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Hey thanks for playing. I tried to correct this issue by increasing the contrast between some of the colors, it helps a bit, but ultimately I decided that the colors were less important because a final release of this would be "colorblind friendly" and have slightly different shapes for each different colored block. Feel free to grab the source and mess with the colors, they are HSV values stored at the top of Playfield.gd.