Campaign Mastery

Today, I offer a new technique for rolling multiple dice many times with great efficiency. Any RPG can benefit from that! I hope everyone had a wonderful Christmas break. Mine was great, though not without its challenges – but I have evidently weathered them, because here we all are, in a bright and shiny New […]

The AEE is a subsystem that slots into any RPG for simulating everything from Bad Weather to Plagues & Poisons. The Backstory A while back, I was working on an adventure for one my campaigns (being deliberately vague, here) and I needed to look up the effects of Cobra Venom in the Hero System. I […]

Lots of die configurations can substitute for a d20, or for 3d6. This article looks at some of the most unusual. Part 3 of 3. There’s something indescribably appropriate about writing the first words of this post on Halloween – after all, many of these rolls are monsters unfit for gentle company. At the same […]

Lots of die configurations can substitute for a d20, or for 3d6. This article looks at some of the more unusual. Part 2 of 3. Progress on writing this post has been a lot slower per word than I was expecting. That’s partly down to the attention to detail, partly it’s the complexity of the […]

There are lots of dice configurations that can substitute for a d20, or sometimes for a 3d6. This 2-part article looks deeply at some. Not all RPG players and GMs are Geeks, it has to be said, but many of us can spend hours noodling over dice and probability curves and other Geeky dice-related subjects, […]

Today I bring you a guest article on Wars in TTRPGs by Alexander Atoz, in two parts. Wars are inevitable in most RPGs, sooner or later, but GMs often struggle to walk the fine line between making the conflict seem realistically big enough and keeping the experience personal to the players. Vast armies lend themselves […]

Today I’m going to walk you through the design of a divided die roll, one of my favorite RPG tools. Dividing one die roll by another creates a large low-result probability and a long tail of low-probability high results. I’ve written about them before in The Physics Of Uncertainty, and used them in Oddities Of […]

Many authors have tried to explain how vast space, and the universe contained within it, really are, usually with less than total success, though with each attempt, some few are reached. This is both something that Sci-Fi GMs need to understand and yet, often hand-wave. I have thought of another approach, one that is strictly […]

Starting and Running a campaign is a lot easier if there’s a clearly understood process that maximizes the opportunities for success and avoids the largest traps and pitfalls. As usual, I worked on the next part of Trade In Fantasy until it became clear that it wasn’t quite going to be ready in time, then […]

The 4th chapter of the Trade In Fantasy series looks at Modes Of Transport and trade route planning (9th post in the series). Table Of Contents: In today’s post: Chapter 4: Modes Of Transport 4.0 A Word about Routes 4.0.1 Baseline Model 4.0.2 Relative Sizes 4.0.3 Competitors 4.0.4 Terrain I 4.0.5 Terrain II 4.0.6 Multi-paths […]

The first of at least three posts looking at everyday personnel in Trade. This covers everything from wagon drivers to guards to dock-hands and farmhands. Anybody who can be considered a faceless cog in the trade machine, in fact! Credit where it’s due: The series title graphic combines three images: The Clipper Ship Image is […]

There are six types of skill roll modifier that I take into account when assessing any attempt by a character – PC or NPC – to carry out some task. Past articles have focused on just a few of them; this post is intended to provide an overview of the whole. I worked on the […]