Like the artstyle and simplicity of the project and keep up the great work
Interesting game I think it could have some powerups and maybe the balloon sometimes gets bigger to make it seem harder and additionally lets say some powerups could be pressed or triggered that lets you go through some of the blocks when it gets bad, but its like 1 time use. Additionally just a little bit switch up and such as that would benefit a lot for it, maybe even change the background a bit so it seems as if the world or gameplay area changes. I did notice that it seems slightly faster as I progress so that is awesome!
Though of course later on I did notice that this is for a template project and that is awesome as well :) it would be nice to see it as a game as well and as a side per say dlc or I dont know purchase you can buy it as a template and build one for yourself