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 […]

Snakes & Spiders in RPGs tend to one-size-fits-all construction. Use reality to make them exceptional! I got curious this morning. Australia is well-known around the world for the number and variety of deadly fauna we live alongside. The likelihood of your home being robbed drops by a ratio of between 100-1000 times if you live […]

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 […]

This is part 2 of the guest article on Wars in TTRPGs by Alexander Atoz. 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 to Roll-playing, […]

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 […]

An observed pattern sheds surprising light on how RPG styles differ from one nation to another. This is the latest in my series of time-out posts in between the Trade In Fantasy series. The YouTube viewer that I use most often displays, at the end of a video, thumbnails of other videos that you might […]

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 […]

Running a campaign is a lot easier if there’s a clear process that maximizes opportunities for success and avoids the worst traps and pitfalls. Campaign Mastery has again been recognized as one of the top 20 blogs devoted to the subject of RPGs. Given the caliber of the opposition, I consider this to be a […]

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 […]

In Part 1, I shared a simple technique for creating immersion within the specific genre of a campaign, and applied it to Fantasy campaigns. Part 2 took a solid look at Science Fiction campaigns (and was supposed to also include everything I cover this time around. These genres were not chosen capriciously; between the four […]

This post details a more tactical combat system for D&D and similar rules systems than the standard one. At the heart of the system lies not d20 or 3d6, but a standard deck of 52 cards. The core concept of the mechanism came to me when I was shuffling cards for a game of patience […]