After publishing Understand, I worked on a few prototypes and this one is my favorite:
A=B is a programming puzzle game with only one instruction: A=B, which means replace A with B.
In the game, you'll solve various problems with this minimalist language: From replace each letter with its uppercase, to multiply two binary numbers.
https://store.steampowered.com/app/1720850/AB/
A demo is available during Steam Next Fest.
Give it a try!
By the way, a friend of mine published an "Artless-like" on Steam.
If you enjoyed The Witness and Understand, you'll be enjoying it.
https://store.steampowered.com/app/1602980/Insight/