But is there any guides to installing this on a Raspberry Pi 3 that's running Raspbian? I've managed to transfer over the files and extract the folder but I have no clue as to how I'm supposed to run the program. I did make sure to download the rPi version as well.

Sorry if it's a bit of a newbie question. Just really want to try this thing out :)

The files you unpack should have folder named pico-8, with some files in it. The binary file named "pico8" you should just double click on that puppy.

I'm having the same issue. It simply does not run on my raspbian on a rPi 3b