It is a very good library, especially for 2d games. ..Just not 100% production-ready out of the box. Some features are lacking (e.g. no stereo audio) or oddly implemented. (e.g. rlgl primitive-dependent texturing)

Thought this was about https://www.ray.io/

I've been using raylib for years now to implement digital signage art and it's been a pleasure to work with, especially thanks to its excellent multi platform support (used many Raspberry PIs). Really well thought, intuitive API, kudos to the author.

How does this compare with something like PICO-8? Has anyone used both? (I understand that this is not a fantasy console and has no artificial limitations, I mean otherwise.)

Perfect timing on this too. I've been learning c++ lately with the intention of using raylib and hey look v4 dropped.