OPWOLF / WOLFSTEIN 3D
That was my first game since Dad had just bought an Ollivetti pc that was operating under DOS . Other games in the same computer were PRINCE OF PERSIA and the third was for Car racing though i do not remember the actual name.
How well do you remember you first old school game ? share one gaming experience because i got mine.
It was on an Olivetti PC operating on DOS and was still in black and white version.
[Mod edit: changed title for clarity from unhelpful ALL CAPS.]