intro was bit quick. I think there is some movie reference, but I can't put my finger on it. You can get quite far with just a few evolutions. I think you should need to evolve like back and forth to go past something maybe to make it more challenging. like have it go ridiculous speed when you increase it or have big size or small size to fit spaces or use the big size as some king of advantage. music stopped playing after a while. maybe make it looping. In Godot there is import setting to make the stream loop. Good job!