Dungeons & Dragons (Original Edition)
Fantasy Generic / Universal Fantasy (High Fantasy) Martial Arts Religion
Random Attribute Generation (during Character Creation) Action Table (table determines action outcomes) Attribute/Stat Based (STR, CON, PER, etc) Class Based (Pilot, Wizard, Scientist, etc) Dice (Various) Level Based (Earn XP and level up) Point Based (allocate points to get skills, powers, etc) Race Based (Player Race/Species affects gameplay)
The rules set from Tactical Studies Rules that started it all!
Due to the Old School Renaissance (OSR) Movement and the rise of retroclones, sourcebooks and adventures that were not specifically put out by TSR are now grouped under Original D&D Compatible Products Any items for the later "Basic" D&D systems (1977 - 1999) should link to Basic Dungeons & Dragons