Collect gems. And if you want ''a change in scenery''; then you can press the arrow keys. I am just really excited, because I never made a project before! Also (I was just saying this because Finn will follow your mouse, and I just wanted to say that) to get points you will have to get Finn to the gems. If you press the right arrow, then you unlock Gar's Bodega.
Credits to Cartoon Network for the inspiration