AD&D 2nd Edition Rules
Dice Protocol implements authentic AD&D 2nd Edition rules via OSRIC (Open Gaming License). This comprehensive reference covers all the core mechanics you need to play. Select a section to dive deep into the rules.
Quick Reference
Core Mechanic
Roll d20 + modifiers ≥ THAC0 - Target AC = Hit
- • Natural 20 always hits
- • Natural 1 always misses
- • Lower AC is better
- • Lower THAC0 is better
Saving Throws
Roll d20 ≥ Save Number = Success
- • PPDS: Paralysis, Poison, Death
- • RSW: Rod, Staff, Wand
- • PP: Petrification, Polymorph
- • BW: Breath Weapon
- • Spell: Spell effects
Death & Dying
- • 0 HP: Unconscious
- • -1 to -9 HP: Dying (lose 1 HP/round)
- • -10 HP: Dead
- • Binding wounds stabilizes at 0 HP
Initiative
Roll d10 (lower acts first)
- • Add weapon speed for attacks
- • Add casting time for spells
- • Apply DEX reaction modifier
- • Ties: compare DEX, then simultaneous