




The Ruins of Castle Gygar
At a Glance






#Dungeon23 to Completion
The Ruins of Castle Gygar is a 360+ room megadungeon designed for old school tabletop RPGs. It is designed with Old-School Essentials in mind but will play great with any OSR B/X compatible game, your favourite retroclone, five-ee, or fantasy heartbreaker.
Notes from the Author
The Ruins of Castle Gygar began as a #Dungeon23 project that I completed over the length of 2023. The #Dungeon23 project was an initiative to write one dungeon room a day every day for 2023, and I completed it! I then spent the next six months digitizing my notebook, refining it into a useable, runnable megadungeon.
Castle Gygar is inspired by many things, such as the original Greyhawk dungeon by Gary Gygax, the structure of the megadungeon in Nethack, as well as the maze structure dungeons of the classic Wizardry computer games.
The book is written by Onslaught Six and features art by Chaoclypse and was edited by Ennie award winner Roz Leahy.
64 pages, 5.5 x 8.5 inch, saddle-bound zine, in protective plastic bag
Includes access to digital version
Fun zine, glad I grabbed one of the last few available. Hopefully they do a reprint for those who missed out.
I wanted something I could run with OSE to see what all the fuss about OSR games was all about (yes, I know I'm late to the party) and bought this sight unseen after seeing an ad on FB, and it was the rare impulse buy I will not regret. It is as stripped down as an RPG adventure can be, but is loaded with interesting puzzles and maps and I look forward to diving into it and maybe even running it one of these days
As a long time gamer i can appreciate the work and creativity that went into this. No randomness, not a generic fill the rooms megadungeon. This guy has given us a creative and thoughtful megadungeon that i can't wait to run a group through. Definately worth the money, well done project!