Really liked the puzzles. Music was nice and the art was simple and easy to understand. The mechanics with each number was also great, i liked the how different numbers had to be used  in each level and gave new challenges.

good job!

Great variety of mechanics and puzzles! The music goes along quite well with the game, and it is pleasent yet challenging to play. Good job!

I like how different it is to control each number. Great idea and implementation of the game jam theme. Good Job ^^

Wonderful variety to the puzzles! Every new one kept things fresh, wonderful work! I did find myself forgetting sometimes what each one did, and for some (like 4, 5, and 7) it's not immediately obvious, so it would be nice to have some other visual indication! Fantastic work, very fun to play!

Very interesting how quickly you need to use the various mechanics to find a way that solves the puzzle for both sides! I also had issues with the smash ability, but thankfully I saw one of your comments further down explaining how to use it and I could try again. I didn't finish the game, but it definitely had a lot of potential.

The one thing I would suggest is to change the whole number/calculator thing: it would probably be easier to remember the abilities using different character sprites than having to associate the abilities to numbers (though maybe I missed something further into the game which makes the numbers important? I did reach the +1 mechanic, but that can be replaced with some other icon that basically does the same thing).

Pretty good entry! I really like the level design and the increasing difficulty. I didn't expect much at first but the levels got really interesting as I progressed, a pleasant surprise!

At first I thought that the mechanic is simple, but after you introduced the abilities it spiced things up and left room for some cool levels.

Well done!

(BTW the smash ability did work for me)