I occasionally run a dungeon crawl using Basic Fantasy RPG that's based on 1980's D&D style dungeons. Exploring dungeons is one of my favored modes of RPG gameplay. It is an open table game & anyone is welcome to join & play when you can, no obligation to show up when you can't -- so message me asking about Basic dungeon game if you are interested in joining or just checking it out. I'll PM the invite to whoever asks. I use black & white hand-drawn recursive geomorph tiles for the map. Say what? Yes. There are 1000 free black & white map dungeon tiles online. They fit together. They can recombined, rotated -- in Roll20 or using another graphics program or a website generator, with ease. It makes endless dungeons if you want. I've already created several large dungeons of different dimensions that are interesting. If needed I can always-always plop a new level ("You find a trapdoor in the floor!") and open a new black&white dungeon tile. Bang, boom. It takes 10 seconds to have a whole new dungeon pasted into Roll20 that's good enough for an entire game session of dungeon exploring gameplay. If you want a link to this map generator I'm talking about, just ask. Populating the dungeon with monsters is almost as fast. I've got access to massive wandering monster tables that can be tailored for the party level & number of players. So the process begins: Find out how many players tonight. Paste in a new dungeon map (1000 tiles mixed up in a new way, you'll never recognize it). Generate the monster tables based on the number of PC's. Go! Personally my style is to add some planned set-piece encounters in certain rooms, while generating random monsters & traps & treasures for the randomized rooms in between the set encounter spots. I use Fog Of War to blacken the entire map, save the starting room that has the character tokens. I don't use Dynamic Lighting and don't miss it at all, though I've tried it as a player and it's pretty but non-essential for this. I use very plain color tokens with the first letter of your name (Example, my token would be a "G" for Gold, Vince's token would be a "V"). Players can't go into an unexplored room without GM approval because it's pitch black with Fog Of War. They can't see if they move a token there. Whatever room they are in, I open the Fog enough that they can see the doors / exits / hallways. When they come to a door, if they open the door & go through, I open up the Fog Of War so they can see the next room completely. I leave all the past rooms open (lit up, and clear of Fog). They can see where they have been. They can retreat or backtrack freely. If they want to move to a new room, they should stand by the edge of the Fog and tell the GM they want to look or walk that way. Well, I've run this game for more than a year so far, and had more than 35 players explore parts of the dungeon. Some of them were new people introduced to D&D for the first time on my Roll20 dungeon maps. I've wrestled with many more ideas in this, for treasure, monsters, balancing, how to tolerate players who come & go at different times. Planning to keep the campaign going in 2015. The campaign is called "Explore dungeons inside a strange world!". Hit me up if you have any questions or want to try it sometime. Happy adventuring everybody.