The idea is pretty awesome, and for a game jam game, it's quite remarkable.

However, the physics are a bit wonky. I had a hard time trying to make the squares fall into the slots I actually wanted them to. They would either fall over or get stuck. I also understand that the factory has to have a limit, otherwise, you could just multiply two numbers continuously and eventually reach a googol. However, the machines are a bit awkward to chain together in such a small height, mainly the multipliers which occupy two slots.

Still, it's pretty awesome. I had a lot of fun with it, and it has a lot of potential as a full game, maybe even a mobile one.