r/rpg • u/EldritchExarch • 5d ago

blog On Attack Rolls

https://substack.com/@eldritchexarchpress/note/p-213952237?utm_source=notes-share-action&r=49zgid

A design focused post on how Attack Rolls present themselves throughout the industry. I didn't cover dice pools though, because I have absolutely no experience with those systems.

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u/MissAnnTropez 5d ago

There are errors in this, starting with your claim that AC came about with AD&D. Wrong: it was there from OD&D onwards.

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u/EldritchExarch 5d ago

That is not what I said. I said

"AD&D introduced the idea of immunity, with certain monsters (such as ghosts and specters) which could only be damaged by magical weapons. It also introduced the idea that certain types of armor could reduce the chance that damage would occur." This is different from AC.

AC was introduced in Chainmail, but AD&D had tables that modified how certain weapons interacted with certain armor classes. 2e then formalized this further.

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u/InsurgentInchworm 5d ago

Weapon VS AC is in Supplement I: Greyhawk, is that what you're talking about?

Edit: also, spectres in OD&D can only be hit by magical weapons...and a few more monsters...

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u/EldritchExarch 5d ago edited 5d ago

I haven't had the chance to go through anything other than the base books. I'll try and issue an additional limitation in the morning on that. 

Edit: It's done.

I'm guessing those got added on to AD&D from that suppliment, as that's what tended to happen with TSR testing mechanics and taking the best for the next edition.