Fiat = king. Infer, extrapolate, describe, create. --- Check: When facing uncertainty, roll 1d20 equal or under appropriate STAT. --- STATS: ATTRIBUTES: 4d4 each. STRENGTH, DEXTERITY, CONSTITUTION, CHARISMA, INTELLIGENCE, WISDOM. HEALTH = 1 HD*LEVEL. 1HD=1D8. (0 = dead.) ATTACK = 11. DEFENSE = 10. SLOTS = CONSTITUTION+2. (Items use 1. Armor uses 1 per 2 DEFENSE. Weapons use 1 per 1d6 damage. 1 hand per 1d6.) SAVE = 5+LEVEL. (check decreases disaster.) --- 1 coin = 1 experience. Buy equipment, happiness. Every 2000 experience, increase LEVEL. Then, [+2 HEALTH, +1 ATTACK] or [+spell SLOT.] --- Roll spells daily. Single-use. Referee assigns range, duration, effect. Random word per list: Create, Destroy, Absorb, Channel, Amplify, Decrease, Hasten, Slow, Distort, Shape, Move, Still. - Water Heat Wood Earth Body Sound. --- Encounters 2d6: 2-5 friendly 6-8 neutral 9-12 aggressive. 1d6: 1=surprise. 6=surprised. Check foe's MORALE with 2d6 when foe outnumbered/badly hurt. Success = foe flees/surrenders. MORALE 12 always fights.) Check WISDOM. Success/Fail = before/after foe. Move (40'), act. Foe = HD, DEFENSE, MORALE, damage d6s, abilities. --- Attack: check [ATTACK+10-foe DEFENSE.] Defend: check [DEFENSE-foe HD.] On-Hit: reduce victim's HEALTH by damage dice sum. --- Night's rest = restore HEALTH.
Current version: https://docs.google.com/document/d/1lXNo9Wl-yVd2I_GgFWz7j5fwYCsm7B6H-HzWU_MuxKs
This should work with no adjustment with almost any B/X, OD&D, AD&D, or OSR adventure. Like those systems, this is intended to be the structure on which a referee makes rulings. It’s not an all-encompassing solution because the referee is expected to make rulings to suit the game he/she is running and the group that is playing.
Example spell: Still Wood might be interpreted to close and lock doors.