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John Calvin

Post Blackmoorian Character Class: Cyborg from the Mystara Mailing List posted 7 March 1999.

Blackmoor: Post Cataclysm from the Mystara Mailing List posted 21 March 1999.

Nithian Outposts from the Mystara Mailing List posted 26 March 1999.

The Alphatian Arts from the Mystara Mailing List posted 15 September 1999.

Hollow Moon Spells from the Mystara Mailing List posted 22 November 1999.

Enclave Timeline - Hidden Blackmoor from the Mystara Mailing List posted 29 November 1999.

Not Men, revised from the Mystara Mailing List posted 29 November 1999.

Thonian Gremlinate, Anti-Tech spells from the Mystara Mailing List posted 3 December 1999.

Catastrophe Myths from the Mystara Mailing List posted 20 January 2000.

Zen-Thara - Hidden Blackmoor from the Mystara Mailing List posted 23 January 2000.

Shadow Elves 3000 AC from the Mystara Mailing List posted 8 September 2000.

Notes to Dragon Society in Wyrmsteeth continued from the Mystara Mailing List posted 20 September 2000. (done with Giulio Caroletti)

Organisations in the Wyrmsteeth continued from the Mystara Mailing List posted 20 September 2000. (done with Giulio Caroletti)

The Known World 3000 AC from the Mystara Mailing List posted 21 September 2000.

Wyrmsinger, a prestige class for the Wyrmsteeth from the Mystara Mailing List posted 25 September 2000.

Corruption of the Swords from the Mystara Mailing List posted 22 August 2001 to 12 October 2001. (done with Max Monas and Jens "the Stalker" Schnabel)

A Treatise on Lycanthropy from the Mystara Mailing List posted 9 November 2001.

Alter Personal Climate from the Mystara Mailing List posted 26 November 2002.

Rafiel's Home Plane, revised from the Mystara Mailing List posted 9 March 2003.

Planar Warfare from the Mystara Mailing List posted 8 July 2003.

Lhondaras: Terra, Djaea and Ordana's homeplane from the Mystara Mailing List posted 29 July 2003.

The Eternal City: Khoronus's homeplane from the Mystara Mailing List posted 26 August 2003.

Campaigns through Time from the Mystara Mailing List posted 4 September 2003.

Imperialism and Conquest a tentative guideline to BC 1000 from the Mystara Mailing List posted 8 September 2003.

BC 500 plotlines from the Mystara Mailing List posted 26 September 2003.

Exiles Campaign from the Mystara Mailing List posted 20 January 2004.

Mystara related crystal spheres from the Mystara Mailing List posted 22 January 2004.

Mystara - Eberron crossover from the Mystara Mailing List posted 23 June 2004.

The Nucleus of the Spheres as a Touchstone from the Mystara Message Board posted 8 August 2004.

Hytiliaph from the Mystara Message Board posted 11 September 2004.

The Radiance Revisited from the Mystara Message Board posted 12 September 2004.

Adventure ideas - Working Against Hytiliaph from the Mystara Message Board posted 13 September 2004.

Hytiliaph's Mountain - Ancepes Trigeminus from the Mystara Message Board posted 13 September 2004.

Hytiliaph's Mountain - Secundancepes from the Mystara Message Board posted 2 October 2004.

Adventures on Secundancepes from the Mystara Message Board posted 10 October 2004.

Beyond Ancepes Trigeminus: the Fey Court from the Mystara Message Board posted 19 October 2004.

Frostburn in Mystara from the Mystara Message Board posted 19 October 2004.

Frostburn campaigns in Mystara from the Mystara Message Board posted 21 October 2004.

Mystaran libraries from the Mystara Mailing List posted 3 November 2004.

The Other Doomsday Device from the Mystara Message Board posted 30 July 2005.

Hytiliaph - Heredity table from the Mystara Message Board posted 16 July 2007.

Yuri Molotov from the Mystara Message Board posted 21 October 2007.

Gunzuth - Hin Death Knight from the Mystara Message Board posted 23 October 2007.

Crests of the House of Ritterburg (1000 AC) from The Piazza posted 26 July 2008.

Crests of the Clan of Alhambra (1000 AC) from The Piazza posted 3 August 2008.

Crests of the Clan of Ellerovyn (1000 AC) from The Piazza posted 3 August 2008.

Crests of the House of Crownguard (1000 AC) from The Piazza posted 23 August 2008.

Crests of the House of Igorov (1000 AC) from The Piazza posted 23 August 2008.

Crests of the The Kingdom of Alfheim (1000 AC) from The Piazza posted 27 August 2008.

Crests of the Kingdom of Karameikos (1000 AC) from The Piazza posted 2 September 2008.

Heraldic Crests from The Piazza posted 3 September 2008.

Mapping around Threshold from The Piazza posted 4 September 2008.

Mystaran Archaeology - Tools of the Trade from The Piazza posted 6 January 2009.

Tropos from The Piazza posted 22 January 2009.

Mystaran Villain Challenge from The Piazza posted 1 February 2009.

Crests of the Goblinoid Tribes of Karameikos from The Piazza posted 2 February 2009.

Adapting Curse of the Crimson Throne Adventure Path to Mystara from The Piazza posted 9 February 2009.

Map of Mogreth from The Piazza posted 3 March 2009.

Elves post the Great Rain of Fire from The Piazza posted 6 March 2009.

Mystara 2300 BC, Nations of the Known World from The Piazza posted 21 March 2009.

Mystara 2300 BC, Thoughts about the Cultures and Nations from The Piazza posted 23 March 2009.

Mystara 2300 BC Major Conflicts and Interactions - Azcan/M-Inca from The Piazza posted 23 March 2009.

Mystara 2300 BC Major Conflicts and Interactions - Kopru Dominarchy from The Piazza posted 23 March 2009.

Mystara 2300 BC Major Conflicts and Interactions - Taymora from The Piazza posted 26 March 2009.

Mystara 2300 BC Major Conflicts and Interactions - Vulcanian Immigrants from The Piazza posted 28 March 2009.

Mystara 2300 BC Major Conflicts and Interactions - Urzud from The Piazza posted 29 March 2009.

Once in a blue moon..., Mystaran expressions and sayings from The Piazza posted 22 March 2009. (contributions also by Hervé Musseau, Robert J. Nuttman, Jr., Ville Lähde, Marco Fossati, Geoff Gander, Greg Weatherup and Roger LV Girtman II)

Thoughts About Kogolors from The Piazza posted 30 March 2009.

Map of Mystara 2300 BC from The Piazza posted 2 April 2009.

Kill Bargle! from The Piazza posted 25 May 2009.

History of Northern Darokin Forts from The Piazza posted 24 July 2009.

Nithian inspiration from The Piazza posted 25 July 2009.

The Origin of Worgs from The Piazza posted 29 July 2009.

Unique Mystaran Vessel - Stone Toad from The Piazza posted 29 July 2009.

Unique Mystaran Vessel - Lichcraft from The Piazza posted 30 July 2009.

Maps of the Known World and Taymora 2300 BC from The Piazza posted 21 August 2009.

Hollow Moon: Nation Overview from The Piazza posted 24 August 2009.

Mogreth, the Legend of Soolkhir from The Piazza posted 25 August 2009.

Map of the Hollow Moon, Albheldri Islands, 8 miles per hex from The Piazza posted 26 August 2009.

Bonds of Silver Part I: The Nephthisian Struggle against Taymora from The Piazza posted 28 August 2009.

BC 1700 Catastrophes from The Piazza posted 24 September 2009.

The Great Rain of Fire from The Piazza posted 25 September 2009.

Shadow Elf Lineages from The Piazza posted 2 October 2009.

St. Kruskiev's Gold: a Specularum adventure for 4-6 characters of levels 2-4 current as of 3 October 2009. (Design and development by Giampaolo Agosta)

Mogreth NPCs from The Piazza posted 7 October 2009. (NPCs also by Geoff Gander)

Modrigswerg timeline from The Piazza posted 8 October 2009.

Belcadiz Origin from The Piazza posted 20 October 2009.

Immortal Level Campaign Ideas from The Piazza posted 8 January 2010.

Dead Immortals from The Piazza posted 5 February 2010.

99 Bottles of Mystaran Beer on the Wall, Mystaran beverage and food items, from the Piazza posted 17 February 2010. (contributions also by JTR, Marco Fossati, Blacky the Blackball, Cab, Mike Phillips, Geoff Gander, Giampaolo Agosta, John Walter Biles, micky, Ville Lähde, Jamie Baty, Ashtagon and Sean Meaney)

Map of Intua 2300 BC, 8 miles per hex from The Piazza posted 3 July 2010.

Map of Adhuza 2300 BC, 8 miles per hex from The Piazza posted 22 July 2010.

Tales from Mystara 2300 BC - Man of War from The Piazza posted 22 October 2010.

Timeline for Cathos and Vacros from The Piazza posted 29 November 2010.

Map of Frontierlands 2300 BC, 8 miles per hex from The Piazza posted 20 December 2010.

Hollow Moon Timeline from The Piazza posted 22 January 2011.

Map of the Hollow Moon, Nearside, 40 miles per hex from The Piazza posted 31 January 2011.

Map of the Hollow Moon, Marsh of Putrescence, 8 miles per hex from The Piazza posted 5 February 2011.

Map of Platea, 8 miles per hex from The Piazza posted 24 September 2011.

Map of the Hinterlands, 24 miles per hex from The Piazza posted 24 April 2012.

Map of the Hollow Moon, Apennines of the Pteryx, 8 miles per hex from The Piazza posted 6 February 2011.

Map of the Hollow Moon, Aardovai Rilles, 8 miles per hex from The Piazza posted 3 March 2011.

Map of the Izondian Deep, 24 miles per hex from The Piazza posted 29 March 2011.

History of Thothia and Aran from The Piazza posted 5 April 2011.

Map of Pelatan, 24 miles per hex from The Piazza posted 6 April 2011.

Mystaran monsters and villains from The Piazza posted 16 July 2011. (contributions also by Blacky the Blackball, Andrew Theisen, Robert J. Nuttman, Jr., Simone Neri, Cab, JTrithen and Snorri).

Iconic Items of Lost Civilizations from The Piazza posted 31 August 2011. (contributions also by DJ Hartel, Geoff Gander, Giampaolo Agosta and mister c)

Map of the Known World BC 2000, 8mph from The Piazza posted 2 September 2011.

Mystaran National/Cultural Timeline from The Piazza posted 7 September 2011.

Map of the Known World BC 1750, 8mph from The Piazza posted 5 January 2012.

Map of the Known World BC 1720, 8mph from The Piazza posted 5 January 2012.

Map of the Known World BC 1700, 8mph from The Piazza posted 27 January 2012.

The Aardovai Rilles from The Piazza posted 20 January 2012.

Threats to the Aardovai Rilles from The Piazza posted 23 January 2012.

Thoughts about Loktal's megadungeon from The Piazza posted 30 January 2012.

Hollow Moon: Adventure Ideas from The Piazza posted 20 March 2012.

Map of Hollow Moon, Adhuza, 8 miles per hex from The Piazza posted 29 March 2012.

Mystaran Sliders from The Piazza posted 20 April 2012. (contributions also by Robert J. Nuttman, Jr., LoZompatore, DJ Hartel, Ashtagon, Ripvanwormer, Geoff Gander and Roger LV Girtman II)

Map of Grondheim 2300 BC, 8 miles per hex from The Piazza posted 25 July 2012.

Caurenze's Crisis from The Piazza posted 9 August 2012. (in addition to Giulio Frandi)

Voyage of the Princess Ark (fan derivative) Episode Guide from The Piazza posted 2 September 2012.

World Map 2300 BC, non hex from The Piazza posted 2 October 2012.

Maps of the Shimmering Lands 2300 BC, 8 miles per hex from The Piazza posted 25 April 2013.

Mystara 2300 BC: GazBC1 Shimmering Lands DM's Guide current as of 22 April 2013.

Tabernacle of Gildesh from The Piazza posted 29 April 2013.

Map of Mogreth 2300 BC, 8 miles per hex from The Piazza posted 21 May 2013.

Mystara 2300 BC: GazBC1 Shimmering Lands Player's Guide current as of 2 June 2013.

Goblin War Chariot current as of 10 June 2013. [done with John Walter Biles and Rodger Burns]

Mystara 2300 BC: Campaign Setting version 1.1 current as of 22 June 2013. (done with Geoff Gander)

Map of Ochalea, 8 miles per hex from The Piazza posted 23 June 2013.

Map of Taymora 2300 BC, 8 miles per hex from The Piazza posted 26 August 2013.

Books of the Known World from The Piazza posted 22 October 2013. (with additions by Jesper Andersen, Geoff Gander, Giampaolo Agosta, AllanP and Peet)

Yuri Molotov - Death Knight from Threshold issue 1 and The Piazza posted 5 October 2015.

Immortal Symbols from The Piazza posted 13 October 2015.

Time's Travels: Escape from Mogreth part 1: page 1, page 2; part 2: page 1, page 2; part 3: page 1, page 2; part 4: page 1, page 2; and part 5: page 1, page 2 from The Piazza posted 27 October 2015.

Known World Area circa BC 1000 from The Piazza posted 8 January 2016.

Jaime Honey-Creeper Ahua from The Piazza posted 25 June 2016.

Tayma and the Ceremony of Blood from The Piazza posted 15 July 2016.

Map of the Hollow Moon, Independent Trade Cities, 8 miles per hex from The Piazza posted 1 January 2017.

Map of the Hollow Moon, Cacklogallinia, 8 miles per hex from The Piazza posted 1 January 2017.

Map of the Hollow Moon, Crisium Shark-kin, 8 miles per hex from The Piazza posted 1 January 2017.

Map of the Hollow Moon, Vesperlands, 8 miles per hex from The Piazza posted 2 January 2017.

Map of the Hollow Moon, Mauro, 8 miles per hex from The Piazza posted 2 January 2017.

Map of the Hollow Moon, Taurus Gnomes, 8 miles per hex from The Piazza posted 2 January 2017.

Map of the Hollow Moon, Vedal, 8 miles per hex from The Piazza posted 2 January 2017.

Map of the Sea of Dread, 8 miles per hex 1000 AC from The Piazza posted 20 January 2017.

Map of the Sea of Dread: Undersea, 8 miles per hex 1000 AC from The Piazza posted 20 January 2017.

Map of the Hollow Moon, Maskelyne, 8 miles per hex from The Piazza posted 25 February 2017.

Map of the Hollow Moon, Margasta Tribelands, 8 miles per hex from The Piazza posted 25 February 2017.

Once, In a Blue Moon: Return to the Hollow Moon from Threshold issue 2 and The Piazza posted 4 April 2017.

Engdyr’s Game Adventure Path from The Piazza posted 10 April 2017.

Thoughts on Rockhome Dwarves and Nithians from The Piazza posted 20 April 2017.