Running for Strangers: A Gen Con 2026 Prep Checklist That Actually Works
Gen Con 2026 hits Indianapolis July 30 through August 2, and if you're one of the brave souls signed up to run games in that window, you already know con-GMing math is different from your home table. You've got four hours, six to eight strangers, and zero session zero to build trust. Here's what actually matters when you're prepping to run for people you've never met.
Ditch the deep-dive character backstories. At home, session zero is where you build the world together over an hour of chatting. At a con, you don't have that luxury -- most tables get seated, introduced, and rolling within ten minutes. Bring pregens with one clear hook each ("you owe the guild money," "you're the only one who's read the ancient text") instead of blank sheets. People can improvise motivation fast if you hand them a reason to care.
Write your table rules on an index card. Not house rules -- the boring stuff: how initiative works, what "advantage" means if your system uses it, how death or incapacitation gets handled. At your home table you've said this a hundred times and everyone's absorbed it by osmosis. At a con table, half your players are trying the system for the first time. A card they can glance at saves you from repeating yourself every ten minutes.
Time-box your combat before you sit down, not during. If you're running anything with tactical combat, decide in advance how many rounds a fight is allowed to eat, and have a "round three the enemy panics and retreats" escape hatch ready. Con slots are hard-stopped by the con schedule, not by narrative pacing, and nothing kills a table's energy like a GM visibly sweating about the clock in round six.
Know your system's crunch level going in, and prep accordingly. Paizo's launching 13 Omens at Gen Con this year, a horror TTRPG built around Omen Dice -- a shared d6 pool where players add dice over time and the danger climbs, while the Host never rolls at all. That's about as low-crunch as pickup games get, because there's almost no rules overhead to explain before the table's already playing. If you're running something crunchier, budget real prep time to strip your explanation down to the two or three rules that actually matter for a one-shot.
This is exactly the kind of prep GameMasterCraft is built for, honestly -- not because you need software to run a good con game, but because building your index-card rules summary, your pregens, and your pacing checkpoints ahead of time, instead of the night before in a hotel room, is the difference between a table that has fun and a table that's watching you flip through a rulebook. Whatever you use to get there, get there before you sit down.
If you're running games this year, or even just playing in a few, that's the prep list worth actually doing. Everything else is nice-to-have.
What's your one non-negotiable when you're GMing for strangers? Drop it below -- we're always looking to steal good ideas for our own con tables.
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