NOTE: There's nothing to "play" in this cart! It's all in the cart's code!
I remember reading a thread a while back about the idea of having the manual for PICO-8 available in the console itself, maybe in cart form. I plan on getting a PocketC.H.I.P. and I really want to have the whole API reference available to me right from inside PICO-8. So I decided to just put it all in a cart to always have a reference with me.
I made a lot of use of Neko250's awesome API cheatsheet, which is why he's credited as well as zep. I'm sure there are probably typos to correct and maybe an error here and there, so let me know if you see anything needing fixing. I'll try to keep it up to date. In the meantime, feel free to use it yourself.