I like the idea of venn diagrams and picking out patterns and loved the presentation of the game! The theming of seeing patterns in the stars and the relaxing music fit perfectly.
I made it to what I presume is the final level (3 mutually overlapping circles and 7 stars) but couldn't figure it out. It's a bit weird to be able to half-stumble my way to the final level but not feel like I have enough game knowledge to solve it.
I think a couple things that would have been useful are:
- Being able easily go back to previous levels to see your solution.
- Have some indication after you solve a level to confirm the pattern (either visually or through sound). There were lines connecting the stars after you clear a level, but my best guess was that the lines are somewhat arbitrarily drawn?
Overall though I liked it and love your concepts of making games about discovering the mechanics / ideas instead of presenting it through text!