OSRIC

OSRIC, short for Old School Reference and Index Compilation, is a recreation of the first edition of Advanced Dungeons & Dragons and one of the most successful retro-clones.^[1]: 366

The first version of OSRIC was released in 2006. The latest version, OSRIC v. 2.2, was released in 2013.^[2]

Labyrinth Lord

Labyrinth Lord (LL) is a retro-clone written and edited by Daniel Proctor and published by Goblinoid Games in 2007. LL takes its inspiration from the 1981 Basic Set edited by Tom Moldvay and the accompanying Expert Set by David "Zeb" Cook.^[3]

Any adventure written to be played with classic D&D can be run using LL with little or no adjustment. However, there are a few differences between the two games. It extends the rules so characters can advance to 20th level (the 1981 Expert Set only included levels up to 14). In addition, in a nod to Advanced Dungeons & Dragons, clerics receive spells at first level.

Basic Fantasy RPG

Basic Fantasy is a retro-clone written by Chris Gonnerman that emulates and is largely compatible with the 1981 Basic and Expert sets. Its differences from B/X D&D include d20-style ascending armor class and separation of character race and class. It was first released in 2007,^[4] and updated in 2008,^[5] 2014,^[6] and 2023.^[7] The game has been positively received.^[8][9]

Swords & Wizardry

Swords & Wizardry (S&W), developed by Mythmere Games, emulates the original 1974 edition of Dungeons & Dragons. Swords & Wizardry won the Silver for the 2009 ENnie Award for Best Free Product.^[10]

There are three different versions of the game available.

• White Box, a streamlined game emulating the rules and options of just the original 1974 boxed set without expansions, creating a play style omitting many elements that were later introduced to D&D.
• Core, which uses some expanded rules to include most classic game elements.
• Complete, including nearly all of the rules and options added to the original game from supplements and articles.^[11]

Dark Dungeons

Dark Dungeons has as its primary inspiration the 1991 Dungeons & Dragons Rules Cyclopedia, with secondary inspiration (particularly for the cosmology of the default game setting) coming from the 1989 Spelljammer campaign setting. The name Dark Dungeons and the names of the sample characters (and their players) found in examples throughout the text are used in parody of the Chick Tract of the same name.^{[citation needed]}

Because Dark Dungeons emulates the Dungeons & Dragons Rules Cyclopedia, which itself contains collected and edited rules from the Basic, Expert, Companion, and Master sets published from 1983–1985, it is compatible with most adventures and supplements designed for those sets. However, while Dark Dungeons does include rules for immortal level play, those rules are inspired by the 1993 Wrath of the Immortals supplement to the Rules Cyclopedia and are not compatible with adventures and supplements designed for the 1985 Immortals Set.

Mazes & Perils

Mazes & Perils RPG (M&P) is a retro-clone developed by Wild Games Productions, emulating the 1977 version of the Basic Set edited by John Eric Holmes. M&P expands the game from its original level limit of level 3 up to level 12. It won the 2013 ENnie Award for Best Free Game.^[12] An expanded Deluxe Edition featuring new classes was released in 2015.^[13]

For Gold & Glory

For Gold & Glory is a retro-clone of the AD&D 2nd edition rules from 1989. It was first published in 2012, and was written by Justen Brown and edited by Moses Wildermuth. It is available as a free download or as a print-on-demand book.^[14]

Blueholme

Blueholme is a retro-clone of the 1977 version of the Basic Set edited by John Eric Holmes. The Blueholme Prentice Rules, covering 1st to 3rd-level play, were first published in January 2013 by Michael Thomas of Dreamscape Design.^[15] They are available as a pay-what-you-want download^[16] or as a print-on-demand book. The Prentice Rules won the joint runner-up place in the 2014 Indie RPG Awards.^[17]

There are two expanded versions in production: the Journeymanne Rules^[18] which cover play from 1st through 20th level, and the Compleat Rules^[19] which also incorporate additional sub-classes and creatures.

Old School Essentials

Originally called B/X Essentials, Old School Essentials is a clone of the 1981 Dungeons & Dragons Basic and Expert sets (aka B/X) edited by Tom Moldvay and David “Zeb” Cook respectively. The intended features of this retro-clone are 100% faithfulness and compatibility with the original rules it emulates; brevity; clarity; and meticulous organization and indexing. As of 2020, Old School Essentials comes in two versions: “Classic Fantasy” and “Advanced Fantasy,” with “Advanced Fantasy” including B/X compatible material inspired by the first edition of Advanced Dungeons & Dragons. Old School Essentials is unique in that both versions come in two different formats: All-in-one (or two) rules tomes or modular multi-book sets.