I suppose that depends on what you mean by popularity. * CodeCombat is gamified programming lessons and seems to be reasonably popular with kids. * Human Reso

I suppose that depends on what you mean by popularity. * CodeCombat is gamified programming lessons and seems to be reasonably popular with kids. * Human Resource Machine teaches assembly language programming and was popular -- it even got a sequel, Seven Billion Humans. * Robot Turtles was a kickstarted code-teaching board game that became popular enough to become a ThinkFun staple (you can tell because of how cheap it is).