I gave this a few tries but couldn't get a release that got more that 1 star. I feel like some more feedback when you complete a build of what is and isn't within the acceptable range would be helpful.
The notes you have to work off of are funny in how incomprehensible they are. I don't want to say they need to be more clear, since that's part of the game, so maybe we just need to be given more time to fully be able to read them. It feels like the time limit was balanced around you already knowing what sort of parameters you need to set going in, so maybe this was supposed to take a couple dozen tries to get right.
Or... maybe I'm just bad.
I liked the guitar music, but after finishing a single build it gets replaced with the blob game's music, I wish it switched back when you weren't playing a build.
Honestly if the builds told you what was and wasn't correct, and if the timer was doubled or so, I think I'd have a hard time coming up with much critical to say. Good job on this game!