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Rules

General rules

The Mystara campaign

Mystara specific rules
The Red Curse and the Savage Coast

Campaigning

Campaign economics UPDATED
Construction
NPCs

Game mechanics

Game mechanics
Encounters

Combat and warfare

Combat
Martial arts
Swordsmanship
Warfare and mass combat

Magic

Magic and spellcasting
Mana manipulation
Chronomancy

Equipment

Items
Weaponry and Armour
Magic items

Characters

Characters
Ability scores
Alignment
Weapon mastery
Mastery
Psionics

Game conversions

Converting between different editions of D&D

General rules

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BECMI / RC House Rules by Irondrake from The Piazza posted 24 August 2015.

BECMI / RC House Rules by Jody Hong from The Piazza posted 7 August 2015.

Library of Tinkering: Custom Rules for the Mystara Campaign Setting by Donald Eric Kesler, Sarah Kesler and Bob Wagstaff, current as of 17 December 2011.

Optional rules for a more basic campaign by Jeff Querner and Angelo Bertolli current as of 6 June 2001.

House Rules by Angelo Bertolli current as of 6 June 2001.

Rules Review by Tomás Sánchez, from the Mystara Message Board posted 27 December 1999.

Random Events by Kenneth Baggaley from the AOL Mystara Message Board posted 2 January 1997.

The Mystara campaign

Mystara specific rules

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The Radiance for 3.5 by Håvard from the Mystara Mailing List posted 22 March 2004.

Spell of Preservation by James Ruhland, from the Mystara Message Board posted 17 December 1999.

The Red Curse and the Savage Coast

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Rules for Legacy and Affliction in 3E by Trevor Mellis, current as of 10 August 2001.

Differences between the D&D and AD&D red curse rules by David Knott, from the Mystara Mailing List posted 19 July 1998.

Campaigning

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George Hrabovsky's Rules Cyclopedia-based Mystara Game by George Hrabovsky, from The Piazza posted 4 April 2012.

Campaign economics

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Adventurer's Guild by Irving Galvez, current as of 20 September 2017. NEW

Costs for Hirelings and Mercenaries by Irving Galvez, current as of 12 September 2017.

Regni and Nobilità: Modulo per la Gestione dei Possedimenti (Italian) version 1 by Omnibius current as of 17 April 2012.

Thoughts on Class Bonuses in the Dominion System by Håvard and Giampaolo Agosta from The Piazza posted 30 September 2011.

Hollow World Barter System/Alternate Economies by Andrew Theisen, from The Piazza posted 3 September 2010.

Kingdom of Eusdria: population and military by Giampaolo Agosta from the Mystara Mailing List posted 25 April 2002.

Calculations with Dominions by Mike Harvey, from the Mystara Message Board posted 22 February 2001.

The City States Economics an example AC 1000 by Bruce Heard, from the Mystara Message Board posted 17 September 1999.

Bellissarian Economics an example by Bruce Heard, from the Mystara Message Board posted 13 January 1999.

Dominion Economics excel file by Bruce Heard, current as of 22 July 1999.

Dominion Economics 101 by Bruce Heard, from the Mystara Message Board posted 21 January 1999.

Known World Grimoire: Letters and more economics by Bruce Heard from Dragon Magazine 189 published January 1993.

Construction

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A Watchtower by Sean Meaney, current as of 6 September 2005.

Cost of a thieves hideout with cover building by John Hare, from the Mystara Message Board posted 18 January 1999.

Ship and dock construction by Marco Dalmonte, from the Mystara Message Board posted 12 November 1998.

The cost of building a tavern by Bruce Heard, from the Mystara Message Board posted 6 October 1998.

The cost of building a hovel by Bruce Heard, from the Mystara Message Board posted 6 October 1998.

Building it excel file by Bruce Heard current as of 12 January 1999.

Building it, examples by Bruce Heard, from the Mystara Message Board posted 29 December 1998.

Building it version 3, the cost of construction by Bruce Heard, from the Mystara Message Board posted 29 December 1998.

Labour Issues by Bruce Heard, from the Mystara Message Board posted 6 October 1998.

Building description - knights' hostel by Brant Guillory, from netMAG 3.

Building description - knights chapterhouse by Brant Guillory, from netMAG 3.

Known World Grimoire: Castles Revisited by Bruce Heard from Dragon Magazine 193 published May 1993.

NPCs

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Statistics for Commoners by Robin, from The Piazza posted 26 July 2017.

NPC building technique by Beau Yarbrough, from the Mystara Mailing List posted 30 April 2000.

Rules for expanding upon non-combatant humans by Mike Harvey, from the Mystara Mailing List posted 24 March 1998.

Noble NPCs by Kenneth Baggaley from the AOL Mystara Message Board posted 30-31 December 1996.

Game mechanics

Game mechanics

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All about doors by Robin current as of 9 February 2017.

Infectium Morbis et Rigidum (Diseases and Afflictions) by Robin current as of 9 February 2017.

A note on lycanthropy and humanoids by Robin, from The Piazza posted 5 October 2016.

Post-Adventure Weariness by Håvard from The Piazza posted 21 April 2014.

Alternate XP System by Håvard from The Piazza posted 31 March 2014.

Natural Healing and Halfling Cooking by Håvard, from The Piazza posted 2 February 2014.

Jumping and Falling by Robin from Breath of Mystara 27 October 2013.

Wounds and Injuries by Robin from Breath of Mystara 30 September 2013.

Food, water and fuel, tabular information by Robin from Breath of Mystara 17 September 2013.

Alcohol by Robin from Breath of Mystara 5 April 2013.

4e-inspired THAC0/AC system by Giampaolo Agosta, from The Piazza posted 23 August 2009.

Creature subtype: Exalted by Jamie Baty from the Mystara Message Board last updated 14 March 2007.

Spellcasters For Hire by Scott Moore, current as of 4 July 2004.

Handling Poison by Angelo Bertolli current as of 6 June 2001.

Insanity, Horror, and the Outer Beings in Mystara by Geoff Gander, from the Mystara Message Board posted 2 June 1999.

City Votes by Kenneth Baggaley from the AOL Savage Coast/Red Steel Message Board posted 23 November 1996.

Encounters

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Random Encounter Tables by Angelo Bertolli current as of 6 June 2001.

Combat and warfare

Combat

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Initiative by Robin from Breath of Mystara 16 February 2014.

Alternate Initiative System by Bruce Heard, from About Bruce Heard and New Stories 4 March 2012.

Striking Procedure strangeness by Antonio Eleuteri from The Piazza posted 14 January 2011.

Breakdown of phases in a Combat Round by Blacky the Blackball from the Piazza posted 3 January 2010.

Breakdown of actions in a Combat Round by Giampaolo Agosta, from The Piazza posted 1 January 2010.

Combat Stunts by Jacob Skytte, from the Mystara Mailing List posted 3 February 2003.

OD&D/AD&D Flexible Combat by Scott Ludwig, from the Mystara Message Board as of 31 August 2001.

The Continuous Combat System by Jim Bobb, from the Mystara Mailing List posted 13 August 1999.

Variant Combat System by Tracy A. Bandy, from the Mystara Mailing List posted 10 June 1996.

Some aspects of the combat system by Oeystein H. Lund, from the Mystara Mailing List posted 22 April 1996.

Martial arts

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Canon references to martial arts by Giampaolo Agosta from the Mystara Message Board posted 18 December 2004.

Secret passes of the Ten Thousand Fists of the Khan by Giampaolo Agosta from the Mystara Mailing List posted 18 September 2004.

Diffusion and Development of Martial Arts in Mystara by Giampaolo Agosta from the Mystara Mailing List posted 9 September 2004.

Martial Arts Styles by Marco Dalmonte, from the Mystara Mailing List posted 18 August 2000.

Basic martial arts weapon mastery charts by redfish, from the Mystara Mailing List posted 30 April 1998.

Elemental Martial Arts by David Melik, from the Mystara Mailing List posted 29 March 1997.

Unarmed Combat Styles in D&D by George Hrabovsky, from the Mystara Mailing List posted 28 June 1996.

Aikido by Andrew Theisen, from the Mystara Mailing List posted 14 January 1996.

Swordsmanship

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Secret Passes by Almadjian, from the Mystara Message Board posted 25 June 2002.

Darokinian Rapier and Main-Gauche Fighting feat for 3E by David S. Leland, from the Mystara Mailing List posted 15 September 2000.

Fighting Style: Karameikan Style by Beau Yarbrough, from the Mystara Mailing List posted 22 May 2000.

Swashbucklers & Firearms by Bruce Heard, from the AOL Savage Coast/Red Steel Message Board posted 25 August 1995.

En Garde!. An article on Savage Coast sword tactics by Cindi Rice, from Dragon Magazine 232 published August 1996.

Warfare and mass combat

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Naval Combat by Donald Eric Kesler, current as of 12 March 2009.

War Machine in 3E by Jamie Baty from the Mystara Message Board last updated 7 September 2006.

War Machine options by Jamie Baty from the Mystara Message Board last updated 14 July 2005.

War Machine modifications for X10 by Ville V Lähde, current as of 10 September 2001.

Mystaran Mass Combat System by Adrian Mattias and James Ruhland, from the Mystara Message Board posted 26 April 2000.

Formation Fighting by Rob, from the Mystara Mailing List posted 3 February 2000.

Rules for Mass Aerial Combat by Aaron Nowack, from the Mystara Mailing List posted 14 April 1998.

Known World Grimoire: Assembling Armies in the D&D Known World by Bruce Heard, from Dragon Magazine 191 published March 1993.

Magic

Magic and spellcasting

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Spell Memorization, by Paul Dupuis, from the BECMI Facebook group posted 1 September 2015.

Copying spells from the looted books of enemy magic users by Blacky the Blackball from the Piazza posted 18 August 2009.

Magic and Mystara by Håvard, from the Mystara Mailing List posted 5 January 2006.

Spell Enhancement by David Paige, from the Mystara Message Board posted 5 September 2005.

Spell Foci by David Paige, from the Mystara Message Board posted 24 August 2005.

Wizards and Armour by Marco Dalmonte, from the Mystara Mailing List posted 31 August 1999.

Suggestions for Spell Variation by Barry Clarke, from the Mystara Mailing List posted 23 February 1999.

OD&D Illusionist Spells suggestions by Jim Bobb, from the Mystara Mailing List posted 29 January 1999.

Mana manipulation

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Raw Mana Manipulation by Adam Curtis, from the Mystara Mailing List posted 13 June 1998.

Magical Parrying by Adam Curtis, from the Mystara Mailing List posted 8 June 1998.

Chronomancy

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Mystara and Chronomancy, version 1.1 by Hervé Musseau, from the Mystara Mailing List posted 9 September 1998.

Chronomancy and the Multiverse, version 1.1. An excerpt, relevant to Mystara, from the Chronomancer supplement by Roger E Moore published 1995.

Equipment

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The Mystaran Armoury: A Guide to Armour, Shields, Weapons, Firearms, & Siege Engines by Marco Dalmonte version 1.6 (Italian); English translation version 1.6 by Gary Davies, current as of 16 December 2015.

What can be Bought by Robin from The Piazza posted 27 August 2015.

Equipment Saving Throw table by Robin from Breath of Mystara 22 September 2013.

Items

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Linking prices with the game world by Bruce Heard, from About Bruce Heard and New Stories 21 May 2012.

Radu's Emporium by Sean Meaney, from The Piazza posted 21 January 2010.

Price List by Ville Lähde current as of 20 May 2003.

New scheme for item prices by Pasi Anias, from the Mystara Mailing List posted 26 February 1997.

Weaponry and Armour

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Revised Bow Rules by Håvard from The Piazza posted 29 October 2016.

Armour House Rules by Håvard, from The Piazza posted 4 May 2013.

Weapon Materials: Rankings by Giampaolo Agosta, from The Piazza posted 18 April 2012.

Weapon Materials: Elemental Materials by Håvard, from The Piazza posted 16 April 2012.

Gunpowder in Mystara by Pol Ginés, from The Piazza posted 12 July 2009.

New Weapon System by Angelo Bertolli current as of 22 June 2001.

Equipment Weights and Weapon Damage for Wee Folk by Geoff Gander, current as of 10 July 1998.

Crossbows and Guns by Kenneth Baggaley from the AOL Savage Coast/Red Steel Message Board posted 2 November 1996.

Magic items

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Naming magic items by JTrithen, from The Piazza posted 20 September 2010.

Magic Item Tables by Angelo Bertolli current as of 6 June 2001.

Characters

Characters

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Revised Class Specifications for Nithian characters by Håvard from The Piazza posted 22 October 2016.

Alternate Uses for Saving Throws by Håvard, from The Piazza posted 23 November 2015.

Alternative Saving Throws by Scott Anderson, from The Piazza posted 16 April 2014.

Playing OD&D with Mentzer rules by Antonio Eleuteri from The Piazza posted 17 December 2010.

BECMI class options by Antonio Eleuteri from The Piazza posted 29 November 2010.

Clerical Domains and Specialist Magic Users by Blacky the Blackball from the Piazza posted 18 October 2010.

OD&D-style race/class combination by Roger LV Girtman II, from The Piazza posted 10 August 2010.

OD&D-style race/class combination by Antonio Eleuteri from The Piazza posted 6 August 2010.

3.5/3.75 Race and Class Options by Giorgio from The Piazza posted 5 August 2010.

Advanced Character Options by Antonio Eleuteri from The Piazza posted 26 February 2010.

Saving Throws variant by Giampaolo Agosta, from The Piazza posted 31 August 2009.

Multiclassing by Cab, from The Piazza posted 26 August 2009.

Saving Throws variant by Antonio Eleuteri from The Piazza posted 23 August 2009.

Alternate Race and Class mechanics by Cab, from The Piazza posted 21 August 2009.

PC's families (random determination) by Akiyama, from the Mystara Message Board posted 16 August 2007.

Meta-classes by Sean Meaney, from the Mystara Message Board posted 2 June 2007.

Known World Regions by Andrew Theisen from the Mystara Message Board posted 11 December 2006.

Reconciling immortals by Scott Moore, current as of 26 July 2005.

A more swashbuckling Rake house rules for different character classes by Joe Mason from the Mystara Mailing List posted 26 February 2005.

Demihuman races in basic D&D by Joe Mason from the Mystara Mailing List posted 26 February 2005.

Epic Levels in OD&D by Scott Moore, current as of 28 March 2004.

Multi-classing OD&D characters by Jim Bobb, current as of 7 June 1999.

Class Switching ideas by David Knott, from the Mystara Mailing List posted 22 June 1998.

Ability scores

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Appearance and Comeliness by Scott Moore, current as of 28 March 2004.

OD&D Ability Score Adjustments by Jim Bobb, current as of 5 March 1999.

AD&D Revised Strength Table by Jim Bobb, from the Mystara Mailing List posted 29 January 1999.

AD&D Revised Intelligence Table by Jim Bobb, from the Mystara Mailing List posted 29 January 1999.

A way to increase Ability Scores by Martin Johansen, from the Mystara Mailing List posted 22 July 1997.

Alignment

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Dynamic Alignment System by Håvard from The Piazza posted 7 November 2016.

Sphere Alignment System by Charles Taylor, from The Piazza posted 23 March 2013.

Unified Sphere Theory by Charles Taylor, from The Piazza posted 19 March 2013.

Sphere Alignment System and GAZ7 personality traits by Charles Taylor, from The Piazza posted 17 March 2013.

Other thoughts on Immortal Spheres as Alignments and more! by Greg Weatherup, from The Piazza posted 6 March 2013.

FRPG Personal Code: an Alignment Alternative by Jenni A. M. Merrifield, from the Mystara Mailing List posted 12 November 1999.

New Rules for Alignment by Marco Dalmonte, from the Mystara Mailing List posted 31 January 1998.

Weapon mastery

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BECMI: Alternate Weapon Mastery Rules by Håvard from The Piazza posted 24 February 2015.

The Weapon Mastery Pyramid by Sheldon Morris from The Piazza posted 24 June 2011.

Weapon Mastery Level Limits by Blacky the Blackball from The Piazza posted 24 June 2011.

The Weapon Mastery Pyramid by Joe Not Charles, from The Piazza posted 22 June 2011.

Flintlock Weapons by Donald Eric Kesler, current as of 26 February 2009.

Thompson Sub Machine Gun M1928A1 by Donald Eric Kesler, current as of 14 April 2008.

Weapon Mastery and Class Balance in OD&D by Dan Eustace, from the Mystara Mailing List posted 20 August 2002.

Flails and Morningstars weapon mastery by Geoff Gander, from the Mystara Mailing List posted 8 August 2000.

Ur-Carnifex Bow weapon mastery by Geoff Gander, from the Mystara Message Board posted 12 April 1999.

Basic martial arts weapon mastery charts by redfish, from the Mystara Mailing List posted 30 April 1998.

Weapon Mastery for AD&D by Ron Murphy, from the Mystara Mailing List posted 30 April 1998.

A weapon mastery system v2.0 by David Melik, from the Mystara Mailing List posted 30 April 1996.

Mastery

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Mastery Training for Everything by Charles Taylor, from The Piazza posted 10 December 2012.

Monster Mastery by JJJ, from the Mystara Mailing List posted 12 December 2002.

Mastery and Training by Phillip Jones, from the Mystara Mailing List posted 21 August 2002.

Psionics

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George’s Pathfinder Mystara Campaign: Psionics by Giorgio from The Piazza posted 21 April 2010.

Game conversions

Converting between different editions of D&D

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BECMI to 5E elf conversion thoughts by Stefan Beate, from The Piazza posted 12 May 2017.

BECMI to 5E character levels by class by Mike Harvey, from The Piazza posted 11 May 2017.

BECMI to 5E cleric conversion thoughts by Stefan Beate, from The Piazza posted 10 May 2017.

BECMI to 5E character levels including spell levels by Sheldon Morris from The Piazza posted 10 May 2017.

Thoughts on Converting from 1E to BECMI or B/X by Håvard and Giampaolo Agosta, from The Piazza posted 9 August 2017.

5E Lupin by VoidWalker, from The Piazza posted 7 December 2016.

5E Aranea by VoidWalker, from The Piazza posted 7 December 2016.

5E Diabolus by VoidWalker, from The Piazza posted 7 December 2016.

5E Rakasta by JTrithen, from The Piazza posted 23 November 2016.

5E Races for Mystara by DJ Hartel, from The Piazza posted 18 November 2016.

Mystara: Player's Guide, 5E conversion version 27 by Glen Welch, current as of 6 May 2016.

5E Background Information Specific to GAZ1 by Miladoon from The Piazza posted 9 December 2015.

5E Mystara Domains by Urieal from The Piazza posted 28 April 2015.

Ideas for 5E domains by sphere by Antonio Eleuteri from The Piazza posted 14 January 2015.

5E classes for Mystara by Håvard, from The Piazza posted 8 January 2015.

Customised 5e Glantri Campaign Part 4: Humans by Caius of Glantri, from The Piazza posted 11 November 2014.

Mystara 5e Customised Glantri: Gnomes by Caius of Glantri, from The Piazza posted 9 November 2014.

Customised 5e Glantri Part 3: Halflings by Caius of Glantri, from The Piazza posted 1 November 2014.

Mystara (5e Glantri Campaign): Duels by Caius of Glantri, from The Piazza posted 1 November 2014.

Customised 5e Glantri Campaign Part 1: Dwarves by Caius of Glantri, from The Piazza posted 1 November 2014.

Customised 5e Glantri Campaign Part 6: Rebels by Caius of Glantri, from The Piazza posted 24 October 2014.

Customised 5e Glantri Campaign Part 5: Students by Caius of Glantri, from The Piazza posted 19 October 2014.

Customised 5e Glantri Campaign Part 2: Elves by Caius of Glantri, from The Piazza posted 19 October 2014.

Races and Monsters, 5E Style by Blacky the Blackball from the Piazza posted 22 September 2014.

Immortals, 5E Style by Blacky the Blackball from the Piazza posted 25 July 2014.

Mystara Fourth Edition from The Piazza last file posted 27 July 2011.

M4E in Mystara by Ashtagon, from The Piazza posted 27 August 2009.

PHB2 for Mystara by Rodger Burns, from The Piazza posted 23 August 2009.

HR supplement Mighty Fortress in the Savage Coast by Andrew Theisen, from The Piazza posted 7 August 2009.

Converting BECMI's 36 levels to 30 by Joe Not Charles, from The Piazza posted 31 July 2009.

3E Quick And Dirty Conversion by Håvard, from The Piazza posted 18 December 2008.

4E Quick And Dirty Conversion by Håvard, from The Piazza posted 17 December 2008.

4E classes in OD&D: Warlock by Giampaolo Agosta, from The Piazza posted 16 November 2008.

Immortal God equivalency by region by Giampaolo Agosta, from The Piazza posted 9 July 2008.

Mystaran Immortal equivalents of 4E Gods by Joe Not Charles, from The Piazza posted 8 July 2008.

Monster Manual 5 - Mystaran Adaptation by Ohad Shaham from the Mystara Mailing List posted 4 August 2007.

Mystara Campaign Book: The Mystara Newbie Guide and A Mystara AD&D 2e Conversion by Giampaolo Agosta and The Mystara Newbie Guide Group, current as of 5 March 2006.

Hollow World 3.5 race conversions by Gary Davies from the Mystara Mailing List posted 4 March 2005.

OD&D to 3E conversion of characters by Andrew Theisen, from the Mystara Message Board posted 3 May 2004.

Converting monsters to the 3rd edition rules system by Trevor Mellis, current as of 10 July 2001.

D&D to AD&D Conversion Notes by Ian R Malcomson, from the frp newsgroup July 1998.

Adapting AD&D to Mystara by Håvard, from the Mystara Mailing List posted 11 March 1998.