PBTA – Moves overload

Part of the job of a game designer is to consider the level of cognitive burden and handling time required to run a game, and pitch that at a level which works for the intended audience. I have been noticing recently how that counts in spades for PBTA.

The player-facing side of most PBTA games consists of a series of Moves, each of which has some sort of fictional trigger, and then mechanical steps you execute whenever that trigger occurs, which in turn feed back into the fiction. It’s the first of these – the fictional trigger – that makes cognitive burden a particular challenge for the PBTA designer.

The reason is that, because each Move has a fictional trigger, and because that fictional trigger is (typically) a fairly specific circumstance occurring, you have to constantly scan the fiction as it develops to check if that trigger has happened. Most PBTA games take as fundamental “to do it, you have to do it” and “if you do it, you do it” which is PBTA-speak for “if the fictional thing happens, the Move is triggered” (and vice versa, though I’m less interested in that here). This means you can’t just wait for someone to decide they want to use a particular Move and call it out – their actions in the fiction may mandate that Move.

Take a typical example from Night Witches “when you act up (by acting like a hooligan, by acting like a lady, by acting like a natural born soviet airwoman). This Move requires you to notice when someone is acting outside their normal social boundaries, and then decide whether that acting out fits with either of the three categories (if not, it doesn’t trigger the Move). So it’s a fairly complex, nuanced decision you have to take. You could miss a moment where the Move should have triggered, if you don’t pay attention.

All of this is therefore inherently cognitively burdensome, and the designer must therefore consider in each case whether that level of burden is worth the benefits delivered. Sometimes a complex, nuanced Move is worth it, sometimes it’s better to go for something simpler than might not be as precise.

Of course, it’s not just the complexity of individual triggers (though that is a factor), it’s the sheer combined weight of all the triggers that have to be considered. You could write a PBTA game with 100 basic Moves, but nobody could play it; they’d constantly fail to notice when they were triggering Moves, even if they were fairly simple.

This leads me to some critique of PBTA games I’ve played recently. They’re games I like and have enjoyed, and which are pretty popular, so hopefully it’s clear that I’m not going for a take-down of anyone’s game here. I’m using them as examples of an issue which needn’t be fatal to a game, but which I find difficult in play.

The first example is Sagas of the Icelanders, a game which attempts to emulate the eponymous stories of the early Icelandic settlers. In doing so, it imposes some quite restrictive roles on the characters, specifically relating to their gender. If you play a man, your Moves are focused on physical feats and (rather more complex) defending your honour and attacking the honour and dignity of other men. If you play a woman, your Moves are focused on influencing other characters (particularly, but not exclusively, men) through reason, emotion and sexual attraction. (The way this is set up creates a focus on male characters that is interesting but not the focus of my critique.)

Whenever a character takes action in Sagas, like every PBTA game, you have to mentally compare what they did to the Moves to see if one was triggered. Of course, you first have to focus on the correct set of gendered Moves, since actions that would trigger a Move for a man won’t necessarily do so for a woman, and vice versa. So gender introduces an element of complexity up-front. But – particularly for women – the specific triggers are quite nuanced. You can raise your voice and talk sense, but only to player characters. You can goad to action, but only aimed at a man. And because of the very specific and culturally relevant triggers, many things that intuitively feel like Moves aren’t. All of which is fine, but kind of hard work to parse in play.

Next example is Urban Shadows. Urban Shadows has Moves which are somewhat more intuitive (for me) than the likes of Sagas, which is a plus. Many of the Moves only trigger in fairly well-defined contexts (more on this in a moment). However, it has a lot of Moves. The Urban Shadows Basic Moves sheet has 15 Moves on it, not counting the rules on advancement. That is a lot of mental checks to go through every time someone does something! It’s a lot of possible mechanical triggers to remember, full stop. [Edit: discussion elsewhere has reminded me that the theoretical limit of human short-term memory is seven items, plus or minus two.] On top of that, there are four different triggers for advancement, and a trigger for corruption, that you have to keep an eye on. Again, this is fine, but kind of hard work.

So what can you do about this, if you’re designing a game? Well, the obvious stuff is:

– Keep your Moves simple, with straightforward, intuitive triggers that don’t require a lot of thought to judge.

– Try to keep your Moves list as short as you can. This in turn means…

– …focus on the Moves that really matter for the game you’re trying to write. Don’t waste your players’ mental space with Moves that aren’t all that important – PBTA lets the players and MC negotiate the fiction pretty well even if a Move isn’t triggered.

Another trick is to try and group your Moves by the context in which they occur. Apocalypse World, for instance, has Battle Moves. Including them roughly doubles the number of Moves in the game, taking it from a pretty simple half-a-dozen Moves up to more like a dozen. But you only have to think about the Battle Moves if you’re in battle. If nobody has any weapons out, you needn’t waste any brain space thinking about them. Similarly, Night Witches divides its Moves into day and night Moves, and in almost all cases you therefore only have to think about half the potential Moves at any given moment.

You might think that the Sagas approach is kind of like grouping Moves by context. Well… I don’t know what to tell you. That’s not how I experience it. Two characters are having a conversation, one of them starts to talk sense, and then I realise that person is a man, so the “talk sense” Move doesn’t apply. That small mental effort, repeated several times a session, is burdensome in a way that “am I in a battle right now” isn’t.

None of this is to say that you can’t write a game with complex, nuanced Moves. With lots of Moves. With Moves that only apply in specific circumstances that require a bit of thought to judge. All of this is permissible, and can be good design. But it is a cost that you are making your players pay to play your game. Make sure you’ve chosen punchy Moves that deliver something worthwhile, so that it’s a cost they’ll be glad they paid.

Author: rabalias

Rabalias grew up wanting to be a pirate. But a band of evil bureaucrats kidnapped him and forced him to work for The Man. Even so, Rabalias was patient and cunning. He escaped by gnawing his way through the walls of his prison and concealing the hole behind a picture of cthulhu. He fled to the coast, and stowed away on the Black Armada, where he worked his way up to the rank of Admiral.

1 thought on “PBTA – Moves overload”

Leave a Reply

Your email address will not be published. Required fields are marked *