I'm not sure that cake is the one that makes you the most money because you can spam it more lol, but you're right, the gameplay boils down to finding the best place to mash the buttons. It would have been different if there had been CPUs, which was the original idea, where you could have stolen their carts too, but I didn't have time :,)
The dialog plugin will be available very soon! If you use Godot, you might find it very useful :D
Thanks you so much for your feedback! :D