OED (Original Edition Delta) is a short set of house rules for Original D&D (1974 edition).
Many of us find the original game the purest, most playable, most DM-friendly version, but it does have some gaps and confusing points. OED clarifies and streamlines various topics to make these rules more approachable to the modern gamer.
- All combat actions are rolled d20 + level + modifiers, with success on 20 or more (no tables!).
- Wizards can't memorize duplicate spells (more variety!).
- Clerics are removed (scarier undead and injuries!).
- Money is silver standard (more value for PC gold!).
- Encumbrance is historical stone unites (easier numbers!).
- Melee weapons each get a simple, unique benefit.
- All the monsters and magic work like core D&D.
The OED rules supplement is free for download at OED Games (www.oedgames.com). And don't forget, scans of the Original D&D core rules can be bought at RPGNow.com (search for "Original Edition").