RPG. As the younguns would say "The OG".
The original RPG, RPG3 or RPG400...... YES, YES I know there were earlier versions which were written with twigs, old bits of rock and trails in the sand but for this demo we are going to write a very VERY simple RPG program from the AS400 age.
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https://www.youtube.com/watch?v=qcY4VmOcr2c