---
title: "GameOfRoles"
description: "a game-theoretic model laid over a template: the roles as players, each with its options and its payoff as a driver tree, and the equilibrium the solver reports; every payoff is computed by the one evaluator over the frame's drivers"
section: concepts
address: /concepts/gameofroles
contract: 0476e35e6e275db5
---

# GameOfRoles

a game-theoretic model laid over a template: the roles as players, each with its options and its payoff as a driver tree, and the equilibrium the solver reports; every payoff is computed by the one evaluator over the frame's drivers

[figure: GameOfRoles is a value at none scope. The drawing shows its fields and the objects that they point at.]

| property | value |
|---|---|
| kind | value |
| scope | none |
| key | none |
| store | none |
| family | market |



## Fields


| field | type | required | note |
|---|---|---|---|
| `players` | [RoleAroundADecision](/concepts/rolearoundadecision) | yes |  |
| `moves` | [GameMove](/concepts/gamemove) | yes |  |
| `solution_concept` | `one of a Nash equilibrium of the stage game \| a subgame-perfect equilibrium over the horizon \| a best-response dynamic` | yes |  |
| `equilibrium` | `text` | no | what the solver reports, in the roles' words; absent until solved |
| `evidence` | [EvidenceRef](/concepts/evidenceref) | no | the readings the payoffs rest on |



## Routes that use it
No route takes or returns GameOfRoles directly. The record holds it, and the objects that point at it reach it.