If you keep resolution low, manage your scene complexity carefully and commit to the art style, you can make reasonable 3D games that run even on 20 year old hardware. I did so as an experiment on my game [1] [2] and now that I can see that it works, I am working on a second, more "serious" and complete one. Computers are fast.
[1] https://news.ycombinator.com/item?id=45270981
[2] https://totenarctanz.itch.io/a-scavenging-trip
Really cool news about raylib. I will seriously consider using this.