RPG Evolution: Me vs. the Mob

Because I know players often don't show up, I overbook my weekly D&D library game. Sometimes though, EVERYONE shows up. Here's how I handle 10 players at once.
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Picture courtesy of Pixabay.

In the world of public library gaming, overbooking is more than a strategy; it is a survival mechanism. Because I run a free weekly game at the library, I learned quickly the math of the "soft yes," where a forty to sixty percent no-show rate is the standard baseline. I invite twelve players expecting six, and usually, the universe provides. But every once in a while, the stars align in a way that feels like a cosmic prank, and suddenly I'm staring down ten eager faces at a table that can hold seven at most.

This is the moment where the "Living World" concept truly proves its worth. Rather than turning people away or allowing the game to descend into a sluggish, unplayable mess, I decided to lean into the geography of my setting and treat the crowd not as one massive party, but as a living community acting in parallel.

Divide and Conquer​

The key to managing ten players without losing the narrative thread is physical and mental separation. In my persistent world of Hammersmith, the dwarven town is large enough to support multiple simultaneous crises. When the full roster arrived, I divided the group based on their current location in the town, placing one faction on the left side of the table and the other on the right.

This physical divide allowed me to alternate scenes with cinematic precision. While one group was negotiating with the surly dwarven metalworkers, the other was dealing with the fallout of human farming tensions on the outskirts. By running two separate initiative tracks and alternating focus between the Left and Right Table, I kept everyone engaged. The players weren't just waiting for their turn; they were watching the other half of the story unfold across the table, knowing their paths would eventually converge in a high-stakes finale.

Taming the Combat Clock​

When you have ten players and a swarm of enemies, traditional D&D combat becomes the enemy of fun. To keep the momentum from grinding to a halt, I had to implement a system of ruthless efficiency. This meant moving away from individual initiative in favor of group turns, allowing the two parties to act as cohesive units.

I also adopted the "on deck" system, explicitly telling players who was up and who was next to ensure they were ready the moment their window opened. In a group this size, there is no room for "let me check my spells" when your turn starts; if a player isn't ready, their character takes the Dodge action, and the story moves on. To save even more time, you can also use the average number for monster damage and even use mob rules for larger enemy groups, though I didn't find that necessary (rolling is fun for me too!).

Maintaining Focus in Public Spaces​

Running a game of this magnitude in a public library adds another layer of complexity: the strict time limit. With only four to five hours before the doors close, every minute spent looking at a phone or arguing over a minor rule is a minute stolen from the climax.

I’ve found that a firm no phones policy—except for digital character sheets—is essential for keeping ten people focused on the shared mental map of the game. I also make a point to actively manage the spotlight by going around the table clockwise during social encounters. This prevents the loudest players from dominating the session and ensures that the quieter participants are given a direct prompt to act. By ending descriptions with a specific question for the group, I trigger immediate action, pushing the party toward the finish line before the library lights begin to flicker.

Strength in Numbers​

While most experts would advise against a ten-person game for the sake of the DM’s sanity, the "Hammersmith Split" proved that with enough preparation and a bit of narrative bravery, it can work. Seeing two disparate groups of heroes finally unite at the end of the session to tackle a shared threat provides a payoff that a smaller group simply can't replicate. It reinforces the idea that the world is bigger than any one person, and even when the guest list is overstuffed, the story always has room for one more.

Your Turn: How do you manage large tables of players?
 

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Michael Tresca

Michael Tresca



Players are like toddlers; it helps to tire them out. Throw a handful of d20s across the room and tell them they can keep whichever roll they grab first!
 

Great juggling with the two groups and one DM.

I played the Delian Tomb with 11-14 year olds at a scout campout and then all 8 wanted to play when I made 8 PCs to pick from and thought 5-6 would play. There was also a few looking on that mostly stayed out of the game and just watched. One thing I did do was have everyone roll initiative and then use the highest to go first, and then just go around the table. This saved trying to figure more out.
 

If I had 10 players Id get a second GM. I know Discord and Meetup.com have a one click yes, no, maybe system to let folks know if you are coming. Id really enforce that they use it, first of all, and secondly, lean towards yes or no unless they truly are a maybe.

Opening up to the public is a wild ride. You have reliable folks that read notes and indicate when they will show up or not. Then, you will have a lot of folks that barely ever communicate and just show up or no-show with little notice. Which is why doing organized play things like setting up multiple GMs and asking folks to step up and GM is a good practice for a publicly shared game.
 


I was in a high level 3.5 game with 10 players. Even if everyone was ready, it was often 30~45 minutes between each player's action times. One thing we did during combats was encourage pre-rolling your attack dice before your turn. And damage dice if you already knew the to hit number. Also, have a Plan B in case the thing you were fighting went down just before your turn.

One group I play with does the on-deck thing.

For those not ready players, we have used the Delay Action for that character and moved on. When the player finally gets it together, then that character acts and moves places in the initiative order. Sadly, the groups I play with won't tolerate a no phones policy so prying folks out of the phone and to the table is an ongoing struggle.
 

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