The mechanics of armor class, rolling to hit, and hit points have been part of Dungeons and Dragons and RPGs from the very beginning of the hobby. They were adapted to the game from rules for naval wargames, which might explain the terminology. It makes sense to think of hitting ships, their being able to sustain multiple hits before sinking, and the quality of their armour affecting how much they can withstand a barrage of hits before sinking.

Earlier editions of Roleplaying Games like Dungeons & Dragons are sometimes referred to as Old School, Retro, or Original. These are fine terms, but things become a bit confused when more recent supplements or “Retro-Clones” are produced. Are these also “Retro” or “Old School” even if they were published last week?

Drawstring dice bags are nearly ubiquitous amongst people who play with polyhedral dice. They can even be used as hand bags. But what about the inverse– a bag that looks like one of the dice?