Do you know what was the gateway game in your country? I mean gateway to the RPG as a whole – game that kickstarted and popularized the hobby (it doesn’t have to be first – it can be something that came later, but made RPGs popular and shaped the gaming landscape).
In US it’s obvious – D&D was probably the case for entire english speaking world too.
In Poland it was Warhammer.
I know about few countries already:
Germany Die Schwarze Auge
Sweden Drakar och Demoner (CoC/BRP inspired)
France D&D / Die Schwarze Auge
Japan Sword World
How it was in the rest of the world?