Earlier quoted context omitted.
What on earth are these edition things? I'll have to dig out my DMG, PH, MM, FF etc. Apparently, they might be cool. Then there is Traveller, Runequest, Tunnels and Trolls, Car Wars (with Truck Stop etc) and rather a lot more.
Every 8 or so years they revamp the rules and release it as a new edition. Aside from few exceptions, they're mostly incompatible with each other and offer different rules for combat, skill usage and training, etc, and quality-of-life improvements. 3e (more specifically 3.5e) was extremely popular. There's now a ruleset called Pathfinder made by another company, Paizo, that continues the style of 3.5e and is mostly c…
To be honest as a DM/GM I generally threw out the rules as soon as they got in the way of a good narrative.
I'm quite tempted to give it a dabble again ...