How often should you hit in Old-School RPGs?
Most retroclones seem to use the same standard numbers for Leather (light), Chain (medium), and Plate (heavy) armor: 12, 14, and 16, respectfully, with unarmored foes counting as AC 10. There is one prominent exception I've noticed, which is Lamentations of the Flame Princess ( LotFP ). LotFP makes the default unarmored AC 12, and everything else adjusts accordingly (so, light armor is 14, medium armor is 16, and heavy armor is 18). I found this counter-intuitive at first, but as I wondered on whether there's a good way to fix this. As I started exploring to-hit probabilities, I decided to make a comparison between four prominent old-school systems to get an idea of what the options are. I used three B/X retroclones - LotFP, Old-School Essentials (OSE) , and Labyrinth Lord ( LL ) - and one ODD clone , White Box Fantastic Medieval Adventure Game ( WB) I decided to see how different classes' chances to hit lightly and heavily armored enemies changes as they level up. ...