Ask a junior game designer what tools they use and they'll usually say Unity or Unreal. Ask a senior designer the same question and they'll list eight things — none of which are game engines.

A game engine is where your game runs. A game design tool is where your game gets designed . Those are two completely different activities, and conflating them is one of the most common mistakes new designers make. This guide explains what a game design tool actually is, the categories that matter, and how to build a stack that makes you a faster, clearer designer.

TL;DR — Key Takeaways

A game design tool is any software that helps you document, prototype, model, simulate, or communicate a game's design — before or during development.

Game engines are development tools, not design tools.

There are six core categories: documentation, whiteboards, prototyping, systems/economy design, balancing, and LiveOps.

Different game types need different tool stacks — a narrative RPG and an F2P mobile game have almost nothing…