In 2018 I discovered Pico-8 and decided to replicate the experiment. 30-odd days ago I uploaded a working version of robotfindskitten to itch.io. It is very bad Lua code but it works. As of writing, dozens of people have tried it. Dozens!
You can play the game online at itch.io or download versions that will run on Windows, Linux, and macOS. And, you can get a “cart” that will run in the Pico-8 virtual console.
I really enjoyed making the game. I wrote the code, created the sounds, and named almost all of the non-kitten items. Like I said, it wasn’t good Lua code but it was very satisfying to build it from nothing and get it onto something like itch. I’ve started the next game which I think will be similar to the surfing and BMX mini-games from the 80’s California Games.