So one day, I decided to open the source of all my PICO-8 carts. I threw away a lot of not finished carts, yet I still ended up with a big number of them. And I not only wanted to make the carts downloadable but also to make them previewable in the browser. The typical way to do that with PICO-8 is the following:
> LOAD cart.p8.png > EXPORT index.html
index.js, etc etc. But you know, even doing that with 20 carts will take quite some time.
The perspective of just throwing a cart into the directory near your script to automatically make it playable was too good.