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Advanced Crimson Dragon Slayer


"D&D in arcade mode!" ~ Prince of Nothing

This is my own heavily house-ruled hack of B/X and 5e, suitable for one-shots, convention games, virtual play, and even face-to-face campaigns.  I'm currently 16-sessions into my Crystals of Chaos campaign set in the eldritch, gonzo, science-fantasy, post-apocalyptic world of Cha'alt.  Check out my session reports on Venger's old school gaming blog for details.

Advanced Crimson Dragon Slayer is the updated version of Crimson Dragon Slayer D20, and going forward, this will see incremental adjustments (hopefully, improvements) here and there over the years.

In fact, there's room for a couple new races, and I've decided to run a contest to see who will come up with the most Cha'altian suggestion... that will be included in the next update, sometime in early November.  So, get your suggestions in by Halloween (not that it has to be horror-themed or anything, but it can be... whatever, yeah - totally up to you).

4 classes, tons of races, ascending AC, spell casting drains hit-points, lots of standard OSR type stuff, and plenty of weird things I threw in to mesh better with Cha'alt.  Plus, a character sheet (3 slightly different versions)!!!

Your feedback is appreciated.  Especially since I plan on updating this PDF every 2 or 3 months until it's as close to "perfect" as it can get.

Alright, I think that's it for now... see you at VENGER CON III: Revenge of the OSR next July in Madison, WI.  



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Reviews (2)
Discussions (1)
Customer avatar
James A September 02, 2023 4:29 am UTC
I have three general ideas for you:

Special ability: fiery breath weapon that does current hit points in damage. Save for half. Useable 1/day.
Hindrance: make all rolls with Disadvantage while exposed to freezing temperatures.

Special ability: XXX attack for 1d4 damage that heals the Vampyre for the same amount.
Hindrance: suffer Disadvantage on all rolls when in direct sunlight.

Advantages: has four tentacle attacks/round for 1d3 damage each. If all four hit a humanoid victim they must make a save or have their brain extracted.
Mind blast: 1/day create a ripple of mental energy in a cone effect. Living creatures must make a save or be stunned and unable to act for 1d4 rounds.
Hindrances: Thulians believe they are the superior race and have no qualms about sharing that conviction. This results in making all social interaction checks at Disadvantage. Additionally they are never Fighters brcause they believe...See more
Customer avatar
James A September 02, 2023 4:37 am UTC
Weird. The Vampyre should read "B-I-T-E attack for 1d4 damage" I dont know where those X's came from
Customer avatar
Darrick D September 06, 2023 7:06 pm UTC
Thanks for the suggestions, James! I'll put those in with the others... gotta make a blog post. Hopefully, tomorrow!
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Rule System(s)
File Size:
19.68 MB
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File Last Updated:
February 14, 2024
This title was added to our catalog on September 01, 2023.
Kortthalis Publishing
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