

I wrote an article with my thoughts on running mysteries here:
https://slyflourish.com/running_investigations_and_mysteries.html
I wrote an article with my thoughts on running mysteries here:
https://slyflourish.com/running_investigations_and_mysteries.html
The new DMG likewise has a big table for figuring out how many rolls would succeed given a target number and number of rolls.
I have two approaches I prefer these days:
The damage pool. Instead of tracking individual damage, you pool damage in a single tally and remove the last monster hit when it crosses the HP of a monster. Add up all the damage and remove a bunch of monsters with an area attack.
Group up sets of monsters into four groups and then roll once for each group. If sixteen skeletons have to save versus a turn undead. Group them into four groups of four and roll four times.
We have a handful of ideas like this in Forge of Foes and the Lazy DMs Companion and released them under a CC license here:
https://slyflourish.com/lazy_gm_resource_document.html#runninghordes
I put my top tips here after about 15 years of collecting the best tips from hundreds of GMs:
https://slyflourish.com/top_advice.html
The OSR podcast Between Two Cairns does critiques of old school adventures.
The Black Flag SRD also has some simpler spellcaster NPCs.
Yay! Thank you!
Really fun video. Getting a consistent group together is probably the hardest part of running a game. If you can enjoy a game with even as few as one or two players, that can work well.
I use a few tricks to keep groups going:
That’s helped me keep multiple groups going for ten years with one group consistent for about 20 years.