@zep has apparently been a very busy boy from the beginning.

Outside of Pico-8

https://www.lexaloffle.com/pico-8.php
https://www.lexaloffle.com/bbs/?cat=7

and Voxatron

https://www.lexaloffle.com/voxatron.php
https://www.lexaloffle.com/bbs/?cat=6

There are a few hidden gems, other games and systems he has created that you might be interested in, some of which are still being supported and modded.

You may have heard of it briefly but never saw it called, "ZEN PUZZLE GARDEN."

https://www.lexaloffle.com/zen.php
https://www.lexaloffle.com/bbs/?cat=3

. . .

The other he wrote is called, "CHOCOLATE CASTLE." and seems to be a nice and robust puzzle game where you can make and share your own brain teasers with others. I'm definitely interested in this one.

https://www.lexaloffle.com/choc.php
https://www.lexaloffle.com/bbs/?cat=4

. . .

He also did one more clearly for those interested in adventure games called, "JASPER'S JOURNEYS." Note the icons showing usage of items and abilities.

https://www.lexaloffle.com/jasper.php
https://www.lexaloffle.com/bbs/?cat=5

. . .

@merwok was kind enough to show me a list and I see one package there that was not yet mentioned, called, "NEKO PUZZLE." available for download and free from ZEP. I just tried it and it runs fine in Windows 10.

https://www.lexaloffle.com/neko.php

. . .

The last that I know - I've seen and have seen a bonus game that came when I purchased Pico-8 called, "SWARM RACER 3000."

You can find information on that HERE:
https://www.lexaloffle.com/swarm.php

. . .

So - reach out and support ZEP even more. With new maps to explore, puzzles to solve, and worlds to experience.

Thanks to everyone who helped me find these hidden gems !