Independent, GM-first, free
About Sinister 6
Sinister 6 is an independent, free toolkit for tabletop RPG Game Masters: villain, NPC, and encounter generators that run in your browser, plus practical, system-generic guides for running memorable D&D and Pathfinder games.
Written and edited under one byline, the Sinister 6 desk, which is a working name for the writing on this site rather than a person. How we make this sets out where the material comes from, what the generators can and cannot do, and who pays for the site.
Sinister 6 exists for the ten seconds between a player asking a question and you needing an answer. You have friends showing up soon, a plan the players will ignore, and no appetite for reading a rulebook cover to cover just to keep a scene moving. Everything here is built for that moment rather than for the shelf.
What this site covers
Three generators and a shelf of field notes, all pointed at the same narrow job: the part of prep that actually shapes a scene.
- Antagonists. A villain with a want, a wound, a visible method, and a line they will not cross.
- The people in the room. Walk-on NPCs with one want, one quirk, and one voice cue, enough to play them the second a player talks to them.
- Fights that feel fair. Encounter shape, action economy, terrain, and an escape valve, plus the reasoning behind each.
What it deliberately does not cover
The gaps are on purpose, not a backlog.
- Rules and stat blocks. No armour class, no hit points, no challenge ratings, no spell text. You supply the numbers from the game you run.
- Edition arguments and rules lawyering. If advice only holds under one edition of one game, it is not written here.
- Product reviews and buying guides. Nothing on this site is ranked or recommended, so there is nothing for a sponsor to buy.
- Lore, setting, and world bibles. The tools hand you scaffolding for your world, not a world of their own.
Who it is for
The person running the game. New Game Masters about to run a first boss fight, and experienced ones who need a fence, a rumour, and a reason for the ambush in the next ninety seconds. It assumes you know your own table and your own system, and that what you are short of is time.
It is system-generic on purpose. You get characters, motives, and encounter shape rather than copied numbers, so the result drops into Dungeons & Dragons, Pathfinder, or your own homebrew and uses the math you already trust.
How it is paid for
Sinister 6 is a static site on cheap hosting, paid for by the person who runs it. There are no ads, no sponsors, no accounts, and nothing to buy. That is the position as this page stands, and any change to it reaches the standards page first. It is not affiliated with, endorsed by, or connected to any game publisher. How we make this spells out the funding, the sourcing, and the corrections process in full.
Everything is published under one byline, the Sinister 6 desk, which is a working name for the writing and editing here rather than a person. Take what fits, change what does not, and get back to the table. If a roll saves a session or a guide gets something wrong, the contact page tells you how to reach a real person.