Old School Reference and Index Compilation (OSRIC)
Fantasy (High Fantasy) Fantasy History (Britain / Ireland) Horror Weird / Surreal Fantasy (Low Fantasy) History (Europe) Horror (Supernatural) Fantasy (Sword & Sorcery)
Attribute/Stat Based (STR, CON, PER, etc) Class Based (Pilot, Wizard, Scientist, etc) Dice (Various) Level Based (Earn XP and level up) Race Based (Player Race/Species affects gameplay) Random Attribute Generation (during Character Creation)
Old School Reference and Index Compilation (OSRIC) is a fantasy role-playing game intended to reproduce the rules of 1st edition Advanced Dungeons & Dragons, although for legal reasons it never refers to AD&D by name. The OSRIC rules are free to download in PDF form.