I'm preparing my second adventure for sale on DM's Guild (my first being Elf-bane), and this is the first part of the dungeon map -- the crumbling tower of a long-dead wizard.
When I first started tinkering with Roll20 in 2015, my friend John, whom I've played D&D with since my freshman year in college and who lives in a different state, popped on and rolled up a character. I built an adventure on the spot and ran his new wizard character plus an NPC fighter through "Bergummo's* Tower." It's what hooked both of us on the potential for online gaming to allow us to play together again after many years.
Despite being created pretty much on-the-fly, the adventure really worked. It laid the initial groundwork for what would become a 5-1/2-year long campaign that, at one point, had 8 players. The campaign concluded in epic fashion after 118 sessions back in August of 2020.
I always regarded the initial adventure as a great success, so I've gone back and retooled it, expanded it quite a bit, and created new maps. I'm pretty proud of how it's turned out, so here's a sneak-peek. I'm going to run my Tuesday night Roll20 group through it as a playtest, then I'll make any necessary tweaks and publish it.
