[cobzilla]

I really like the whole concept and execution!

I like the lack of instructions, it makes it fun to explore the rules. In fact, unique rules per game might be interesting to discover.

The UI is perfect, keep it simple and focused on play. Though, I agree with other comments that the final flashing lights should be slower.

A move count and leader board for time to complete and fewest moves to complete would make this social-ish.

Maybe hints for harder puzzles?

I could see this going a long way, so many variations to explore!