Engines

Shared rules or resolution systems.

• Advanced Dungeons & Dragons ● The rules of 1st and 2nd edition AD&D.
• Apocalypse World ● Games based off of Apocalypse World.
• Basic Dungeons & Dragons ● The mechanics of original and basic D&D.
• D100 System ●
• d20 System ● The roleplaying system which first appeared in Dungeons & Dragons 3E.
• Dungeon Squad ● The engine of the simple dungeoneering game of the same name by Jason Morningstar.
• FASERIP ● The rules of the Marvel Superheroes RPG.
• FATE ● A game system based on the mechanic: dice roll + invoked and tagged Aspects.
• Hackbird ● Games based on John Harper's Lady Blackbird.
• Piecepack ● "The Flexible, Portable, Affordable Board Game System"
• Redbox Hack ● The engine behind Redbox Hack.
• REIGN ● Greg Stolze's closed tabletop RPG.
• The Fantasy Trip ● An RPG where you play a warrior or a wizard.