Last-Minute GM: Too Many Tables!

The Problem

In Reddit’s /r/osr subreddit, someone posted a thread about having too many tables when generating adventures on the fly.

[…] I’ve found/made some random tables resources that are great, but I’m getting to the point where I have 14-17 pages of random tables. […] Is there such a thing as too many roll tables?

The Real Problem

The easy answer would be “if you are having problems with your current number of tables, that’s too many.” But if we dive into the problem in more detail, I think there’s actually two different kinds of tables:

1. Tables you use on the fly; and,
2. Tables you use between sessions to prep adventures.

Most of your tables will fall into the second category. These are things like contents of treasure troves, qualities of magic swords, random names for taverns, ships, or NPCs, and so on.

The first category, however, should be a very small number of tables. Your current wandering monster tables geared for the adventure area, for example. Area event tables. The standard attack, save, and reaction tables. Maybe a couple generic multipurpose tables to help you improvise when things go off script, like a table of random letters to create initials to suggest NPC names or other names.

But how do you use Category 2 tables if you want to go full improv?

Lists to the Rescue!

The trick is to prep lists rather than dungeon keys. Remember the TSR Monster and Treasure Assortments? Or the NPC rosters? Those were randomly-generated monsters, treasures, NPCs, and occasionally other things. You could roll or pick from these lists, instead of rolling multiple times on multiple tables. But we don’t really need 100+ entries on a list. We can shorten things a bit.

Between sessions, use those random tables to create a list of 6 to 8 ships, or pirate captains, or taverns, or unique named monsters with personalities, or whatever else you know you will need for the areas the PCs will be exploring. You may need several pages of lists for your entire session, but at any given time, you will only need a few of those lists: the ships and pirate captains lists when down by the pirate docks, or the tavern list when wandering the streets.

Rather than treating a list as a table, use this generic table to pick entries from the list:

2d6	Result
2-3	Use second item on list
4-7	Use first item on list
8-10	Use last item on list
11+	Use second to last item on list

Put a checkmark next to an item when it’s used. The second time you use the list, skip items that have been used. Between sessions, restock your lists. You will probably never need more than 6 to 8 entries for any given session.

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