Only *one day left* to cash in on DTRPG's 30% discount. Get your missing Calidar titles before the sale ends. My latest is "The Iron Queen," which focuses on the Calidar's dwarves (written for OSE Classic). Link: www.drivethrurpg.com/en/publisher... #TTRPG #RPG #OSR #DnD #D&D #BECMI #OSE #Mystara

30% off all Calidar titles. Get them while the sale is on. Link in the comments. #TTRPG #RPG #OSR #DnD #D&D #BECMI #Mystara #Roleplaying #HobbyGaming #Fantasy #DragonMagazine #Dungeon

A simple way to address pain and exhaustion in D&D BECMI using Morale Check mechanics. bruce-heard.blogspot.com/2026/06/pain... #TTRPG #RPG #OSR #DnD #D&D #BECMI #Mystara #Roleplaying #HobbyGaming #Fantasy #DragonMagazine #Dungeon

You may find this of interest. #TTRPG #RPG #OSR #DnD #D&D #BECMI #Calidar #OSE #OldStyleEssentials bruce-heard.blogspot.com/2026/05/dama...

Damaging Calidar Demons

Immunity to non-magical attacks is an old D&D BECMI rule designed to make high-level monsters tough to defeat. With equally high-level oppon...

bruce-heard.blogspot.com

Thank you, Alessandro, for your review. Anyone else, please feel free to put in your two cents' worth on DTRPG. Every little bit helps. Thanks. #TTRPG #RPG #OSR #DnD #D&D #BECMI #Calidar #OSE #OldStyleEssentials 📍 www.drivethrurpg.com/product_revi...

The Iron Queen reaches for the stars. Kragdûr needs you: Join the Dwarven Space Force. The space above your game world will never be the same. Now available on Drivethru. #TTRPG #RPG #OSR #DnD #D&D #BECMI #Calidar #OSE #OldStyleEssentials www.drivethrurpg.com/en/product/5...

CA4 The Iron Queen - Calidar Publishing | DriveThruRPG

Open Game License , 2/25/26 ©2026 Bruce A. Heard This digital supplement includes a booklet along with three labeled poster maps of the Iron Queen gunship, and two unlabeled, plus maps needed for an a...

drivethrurpg.com

Breaking: I plan on releasing the Iron Queen on Tuesday, March 3rd. Stay tuned! #TTRPG #RPG #OSR #DnD #D&D #BECMI #Calidar #OSE #OldStyleEssentials

I've uploaded the *Iron Queen* on DTRPG so I can work on the presentation page. I'm waiting for the last proofreading notes to come in before the last file update. The project isn't live yet, but should soon be. Stay tuned. #TTRPG #RPG #OSR #DnD #D&D #BECMI #Calidar #OSE #OldStyleEssentials

Ka-Blam! #TTRPG #RPG #OSR #DnD #D&D #BECMI #Mystara #Roleplaying #HobbyGaming #Fantasy #DragonMagazine #Dungeon

A new direction? #TTRPG #RPG #OSR #DnD #D&D #BECMI #Mystara #Roleplaying #HobbyGaming #Fantasy #DragonMagazine #Dungeon

Hi all. I'll be releasing a new title for Old School Essentials in the coming days. A spacefaring dwarven ironclad facing giant space monsters? Why not. FIRE! I posted a preview here: bruce-heard.blogspot.com/2026/02/prev... #OSE #B/X #BECMI #DnD #RPG #Calidar #TTRPG #OSR

Preview: The Iron Queen

I have the pleasure of announcing the upcoming release of my latest project: The Iron Queen . Designed for Old Style Essentials (classic ve...

bruce-heard.blogspot.com

Breaking News... Spacefaring dwarven ironclad goes to war! Find out more here: www.facebook.com/groups/Calidar DTRPG: www.drivethrurpg.com/en/publisher... #OSE #B/X #BECMI #DnD #RPG #Calidar #TTRPG #OSR

Therein lies the source of a brooding civil war on the World of Kragdûr. #OSE #B/X #BECMI #DnD #RPG #Calidar #TTRPG #OSR

Space runabout, dwarven style. #OSE #B/X #BECMI #DnD #RPG #Calidar #TTRPG #OSR

Pt III The curvature of that tiny planetoid limits the distance the PCs can observe around them. Time is also of the essence because the PCs wear spacesuits with limited breathable air. Happy trails! #OSE #B/X #BECMI #DnD #RPG #Calidar #TTRPG #OSR

Pt II The first map has all the details, the next two are Players' Aid versions (you might recognize an X1 "Isle of Dread" approach with the third). (...) #OSE #B/X #BECMI #DnD #RPG #Calidar #TTRPG #OSR

Pt I The adventure in the "Iron Queen" includes an away mission for the PCs, on a large, airless asteroid. The map shows their short trek from their LZ to the objective. (...) #OSE #B/X #BECMI #DnD #RPG #Calidar #TTRPG #OSR

I had to recover a diagram from CAL1, which should be helpful in my present project. I didn't have the original file, so I recreated it with extra info. #OSE #B/X #BECMI #DnD #RPG #Calidar #TTRPG #OSR

Oh, well. I just handed over the Iron Queen manuscript to my editor. Sigh... I feel under-employed. The poster maps are done, but I want to collect the book's maps and save a set labeled for the DM and another, unlabeled and edited for players. #OSE #B/X #BECMI #DnD #RPG #Calidar #TTRPG #OSR

I added an extra adventure idea to the last chapter. It entails removing the aft turret and replacing its entire structure with accommodations for ambassadors to run a special mission. Shown here: the top lounge, with bar and glass canopy. #OSE #B/X #BECMI #DnD #RPG #Calidar #TTRPG #OSR

Here's the booklet's back cover. Happy Trails! #OSE #B/X #BECMI #DnD #RPG #Calidar #TTRPG #OSR

Here's a mockup of my present project's cover. #OSE #B/X #BECMI #DnD #RPG #Calidar #TTRPG #OSR

Since I completed three earlier articles on French and British WWII aviation, here's the fourth installment. This one is about the prowess of American industrial might in military aerospace. Let me know if you're interested in more of that stuff. Thanks! bruce-heard.blogspot.com/2025/08/USWW...

WWII US Aviation Industry

This article has been more of a whopper after having had a look at French and British wartime industries (click here for France or Britain ...

bruce-heard.blogspot.com

I put together a summary of British aviation during WWII -- its challenge to meet production demands before and during the Battle of Britain, and eventually its mergers. bruce-heard.blogspot.com/2025/07/Brit...

WWII British Aviation Industry

Since I recently completed research on France's aviation industry ( see here ), I couldn't just walk away without doing the same for the U.K...

bruce-heard.blogspot.com

As a follow-up to my previous article, I took a more in-depth look at the sources of issues that plagued French air power in WWII, with a few "what-ifs" added along the way. bruce-heard.blogspot.com/2025/07/Fren...

*NOT* D&D: WWII French Air Woes

I've been toying with a what-if scenario about an alternative buildup strategy for the French air force in the 30s. One of the biggest probl...

bruce-heard.blogspot.com

Next step, statewide or nationwide? #TTRPG #DnD #D&D #OSR #BECMI #Mystara

Here's a bit of research I've done on French aviation of WWII, especially its industries and mergers. There's a lot to be said that explains the troubles of France's pre-World War II military aviation. #WWII #Aviation #Warbirds bruce-heard.blogspot.com/2025/07/WWII...

*NOT* D&D: WWII French Aviation

French aviation of the 30s always puzzled me as regards its industrial basis and organization. I decided to look this up. Here's what I foun...

bruce-heard.blogspot.com

A bit of a rabbit hole, this one ran much longer than I anticipated. How lucky would you feel if one of those pointed directly at your skyship? Full-res image in the comments. #TTRPG #DnD #D&D #BECMI #Calidar #Skyship #OSR #Dwarves #Spelljammer #Steampunk bruce-heard.blogspot.com/2025/07/Iron...

Calidar: Dwarven Ironclad Main Turret

Dwarves of Kragdûr fly large, armored, steampunk-style gunboats, mostly in Calidar’s outer space. My plan is to draft a whole ship in detail...

bruce-heard.blogspot.com

Details of my current project: the floor plans of a dwarven ironclad, 1" per sq., 1 sq. = 5ft. This part focuses on the Iron Queen's powerplants. The full resolution image in the comments. #TTRPG #D&D #DnD #Calidar #BECMI #OSR #Steampunk #Dwarves #Skyship bruce-heard.blogspot.com/2025/07/Fetz...

Calidar: Fetzgrim Engines

A few words about the dwarven Fetzgrim engine. I posted a note in the Calidar chat group on Facebook on this matter. I’m picking up here wh...

bruce-heard.blogspot.com