The 4 program specs are sufficient, along with a screenshot of a conforming implementation, to allow people try out other languages. I have a couple more coming and it seems that by the time you get to chess many languages poop out. Playing sounds, responding to events, drawing precisely, handling different window sizes/device sizes seems to trip up a lot of the more purely textual languages. One of my simplicity goals is to avoid any makefile stuff and avoiding frameworks, only relying on a tiny set of APi functions one must master to build useful programs.