Yeah the virtual limitations really bring out the creativity in people. TIC-80 has a bit less stricter limitations, so you see a lot more 3D games there, but people even managed to do basic 3D with PICO-8 :)

And it's just so easy to get started, especially with the screencast since it's aimed at complete beginners who never programmed before. You don't need a text editor, or a graphics tool, it all comes out of the box with both PICO-8 and TIC-80.