Removing a piece by holding the mouse button is not exactly intuitive. Maybe you could make that a bit more obvious? Otherwise it's a great game. A neat a quite fresh concept you've got there. With a nice difficulty curve, too.
I like it!
Factory Boxes for Factory Balls? Nice! I'm not a fan of the lever though, I often let go too early. Removing the sound until it's activated seems like a good idea. Otherwise it's a lot of fun.
Being able to stop at any vacant square on a piece's path and less randomness at the shop are a hugh improvement. It'll take some time to get used to the new movements, but it's much more enjoyable now. Nice update!
Not exactly a new concept, but very well done. Looks nice, plays smoothly and the difficulty curve is nice. Not that challenging, but not too easy and far from frustrating. Good little time waster.
Your Unpuzzlers are amongst the best puzzle games on this site, for sure. Not the most challenging, but fun nonetheless. Plus, you introduce something new before things get old. Well done, as always.
Selecting levels from the menu would be nice. Right now you have to wait for every single one to load whilst switching through them.
Otherwise it's a great, relaxing puzzler. Your games are always a treat.
Giving age-old mechanics a new twist is fun. A few more difficult levels would be great, but right now this was eggsactly what I needed. Short and sweet.
There are a few good suggestions in the comments: Removing notes could be easier, have note for just the colour OR the number and the bonus level needs a bit of TLC because of multiple solutions.
That said: I love the game! It's a nice brainteaser and a lot of fun. Really looking forward to a possible sequel.
Thanks! An interesting concept with this box factory :) I will try to improve lever.