Here are some of my OLD Projects that I programmed in GFA Basic.
Some I still continue which makes them somewhat new,
and there are some that I just start even today.
Sometimes I may make some form of conversion (from GFA to... um...
PHP, COG, maybe a C, Java, I don't know), but very seldom.
Anyways, in order to run these, you will need to find the GFA Interpreter, or compiler, and an ATARI ST machine (emulated will do fine).