Interesting idea. It's not the kind of thing I'd play all in one sitting, but I might come back for the later levels. It does get surprisingly complex. I played the first 8 or so levels, then jumped to 16 just to see what would happen. It was very tangled compared to the start, so I'm glad you've got the steady difficulty ramp you've got.
I noticed that the first few levels give away the answer if you fail the level, and I thought that was insulting. I decided to fail a few on purpose just to see what I'd get. Apparently, the answer only appears on the first 7 of the 41 levels, after which I simply fail. That's more like it. (But I still can't tell why there's an asterisk next to the level number. Is it just meant to look flashy?)
Overall, it's at least as fun as kenken, and about as thoughtful too. It's okay.