With all my thoughts on the modular megadungeon, I realized something recently while on the road. The best format to present my Cellars of the Castle Ruins adventure (an Upper Works and Level One compatible with Castle of the Mad Archmage) would be in modular segments.
The main elements are a one-page format, a three-letter code, a map at 0.5 cm = 10 feet, a key to said map, and a small graphic that presents the shape of the module at 0.5 cm = 50 feet (this one is a 3 x 3 square). The small graphic is meant to be traced or cut out and fit into the larger-scale map of the megadungeon.
It's also helpful to have the exits mapped to the middle square of any given 50' edge, so the segments can fit with each other and the usual style of geomorph. Note also the blank line left to fill in your own megadungeon and campaign connections.
Anyway, let me know if you try your own hand at the megadungeon mini-module!
Researcher in social science and appreciator of hexy wargames, role playing games, interactive fiction, board games, and CCGs. I've learned a lot doing design and rules editing work on the side for the Legend of the Five Rings CCG. But this blog is mostly about other things.