Yes, I wrote a few different ones for text-based BBS games I wrote in the 90s. I did it because I wanted to write a totally customizable game engine that didn't

Yes, I wrote a few different ones for text-based BBS games I wrote in the 90s. I did it because I wanted to write a totally customizable game engine that didn't require any additional tools. Also, I don't think there were too many free options for me at the time. (Maybe there were, but I didn't really look.) I did it again years later when I was writing another game engine, this time sprite-based. In this case, I could've used an external scripting language like lua, but I figured it would be fun to learn what it takes to write my own language. I learned a ton in both cases even though they were really toy languages that were meant for a very tiny scenario.