Way, way back, through the mists of time. Lunch times were dangerous.
Going to the canteen was a positive hazard to your health. And not just because of the packet custard served at the melting temperature of steel.
There were far more dangerous foes lurking there, sharp elbowed 4th years and the 3rd year smokers viciously queue jumping to get the most out of their fag time.
Not to mention the possibility of having to spend time in close proximity to the most mind bendingly fearsome of all the food halls inhabitants - Girls!
Still. At least there were staff on duty in the canteen. You took your life in your hands in the corridors. If you were caught at the wrong end of the French corridor then you could risk being ripped to shreds by some surly teacher who has spent their life having their subject ignored by hordes of uncaring little arseholes and decides to take his fathomless dissapointment out on you.
If you go outside there is no telling when the horde of rampaging Brosettes will appear to boot you to death with their Doc martens, or the amount of money you'll lose when being force to play pitch and toss or the terror of breaking bones when caught in the middle of a game of British Bulldog.
Let's not even mention the forbidden zone that is the A-wing toilets!
The safest thing to do is to ask a sympathetic teacher if you can use their room at lunchtimes. It may be a history teacher or a technology teacher but some kind hearted soul allows you and your friends to hide, quivering, within their room for the hour.
And it's in that room, with those friends that you start playing roleplaying games.
And the one you play for ages is..... Runequest.