@ericmpaq @GamerMomLuna Bunnies and Burrows was one of those mysterious non-stop games whispered of in dark corners of the basement in the early 80's, when I started in the hobby.
I think it's mentioned in "What Is Dungeons and Dragons" by Butterfield et al.
https://archive.org/details/whatisdungeonsdr0000butt/page/7/mode/1up