Good game design doesn't happen in your head. It happens in tools — docs, diagrams, spreadsheets, simulators — and the quality of those tools directly affects the quality of your decisions. This guide covers the best game design tools across every discipline indie and mobile designers actually need: documentation, prototyping, systems design, economy balancing, and LiveOps planning.
We'll also tell you where each tool falls short, so you can build a stack that actually fits how you work.
TL;DR — Key Takeaways
- No single game design tool does everything. The best designers use a focused stack.
- For docs and GDDs: Notion or Confluence.
- For prototyping and flow: Figma or Miro.
- For systems and logic: Machinations or a custom spreadsheet.
- For game economy design, balancing, and LiveOps simulation: itembase is purpose-built for it.
- Free-to-play and live game designers specifically need a tool that handles currencies, progression, and event simulation — most general tools don't.
What Makes a Game Design Tool Actually Useful?
A game design tool is useful when it reduces the gap between your idea and a testable, shareable representation of it. That sounds obvious, but most tools fail this test in practice — they're either too generic (Google Docs), too complex for a small team (full Jira setups), or designed for a different discipline entirely (Figma is a UI tool, not a systems tool).
The best game design tools have three things in common:
- They match the abstraction level of the problem. Economy tools should think in currencies and sinks. Prototyping tools should think in screens and flows.
- They make your thinking visible. A designer who can't show their system to a developer or producer is a bottleneck.
- They let you iterate fast. If changing one variable requires updating fifteen cells across three sheets, the tool is working against you.
With that framing, here's the breakdown.
Game Documentation Tools
Notion
The go-to for indie teams doing game design documentation. Notion handles GDDs, wikis, task tracking, and meeting notes in one place — which matters a lot when you're a team of two.
Best for: Game design documents, feature specs, worldbuilding wikis, content tables.
Limitations: Not built for real-time design collaboration or visual systems. Anything that needs to be diagrammed will end up as a workaround.
Free tier: Yes, generous for small teams.
Confluence (Atlassian)
Standard at mid-sized studios, especially those already using Jira. More structured than Notion, better for cross-team documentation at scale.
Best for: Teams of 5+ with existing Atlassian infrastructure.
Limitations: Overhead is high for indie teams. Slower to iterate. Costs add up.
Google Docs / Sheets
Not glamorous, but still the most universal tool in game design. Practically every designer has a game balance spreadsheet that started in Google Sheets.
Best for: Quick GDDs, balance scratch work, sharing with external collaborators.
Limitations: No structure enforcement, no simulation capability, version control is manual.
Prototyping and Wireframing Tools
Figma
The industry standard for UI/UX prototyping. If you're designing menus, HUDs, onboarding flows, or store layouts, Figma is the tool.
Best for: UI flows, screen-by-screen mobile game prototyping, asset layout.
Limitations: Figma is a visual design tool, not a game logic tool. It can't tell you whether your economy works — only whether it looks good.
Free tier: Yes.
Miro
A digital whiteboard. Surprisingly powerful for early game design work — mapping core loops, sketching progression systems, running design workshops with a distributed team.
Best for: Visual thinking, early-stage systems sketching, team workshops.
Limitations: Everything is manual. There's no logic layer, no simulation, no data.
Excalidraw
Lightweight, open-source whiteboard. Great for quick diagrams you need to share fast.
Best for: Throwing a rough systems diagram in a doc or Slack message.
Limitations: Aesthetic tool only — no computation.
Game Systems and Economy Design Tools
This is where most indie designers have the weakest tooling — and where the most important design decisions get made.
Google Sheets / Excel
The default. Every game designer has done economy work in a spreadsheet at some point. It's flexible, everyone knows it, and it's free.
Best for: Static economy models, early-stage currency math, quick balance checks.
Limitations: Spreadsheets don't simulate player behavior. They calculate what should happen, not what will happen. They also fall apart fast as your economy gets complex — linked sheets, broken formulas, no version history.
Machinations
A visual tool for designing and simulating game systems. Uses a node-based diagram to represent resource flows, and can run simulations over time.
Best for: Resource flow diagrams, systemic game design, academic-style system modeling.
Limitations: Steep learning curve. Better for systems designers than for economy-focused live game designers who need to work with real game data (items, currencies, events, seasons).
itembase dev
itembase is a game economy design and simulation platform built specifically for designers working on economy-heavy and live games — F2P mobile, idle games, battle pass systems, seasonal events.
Where spreadsheets show you static math and Machinations shows you abstract flows, itembase lets you define your actual game items, currencies, and economy rules, then simulate player behavior against them. You can model a battle pass, run a seasonal event schedule, test a gacha pull rate, or project how a new resource sink affects your economy over 30 days — and see it visually.
Best for: F2P economy design, LiveOps planning, balancing virtual currencies, battle pass design, game monetization design, progression systems.
Why it's different: It's the only tool in this list designed around the concept of a live game economy — not just static balance or abstract flows.
Try it: itembase.dev
LiveOps Planning Tools
Notion / Airtable
Most teams manage their LiveOps calendar in a doc or spreadsheet. Airtable is a step up — it adds views, filters, and relational data to what would otherwise be a flat calendar.
Best for: Event scheduling, content calendars, release planning.
Limitations: No simulation. You can plan an event in Airtable, but you can't test whether the economy impact of that event will cause inflation or kill your player retention.
itembase dev(LiveOps Simulation)
For designers who want to go beyond planning and actually test their LiveOps decisions before shipping, itembase lets you simulate the economy impact of an event. What happens to your premium currency supply if you run a double-drop weekend? What does a limited-time bundle do to your IAP conversion curve? These aren't questions a calendar tool can answer.
Best for: LiveOps economy modeling, event impact simulation, season design.
The Recommended Stack for Indie and Mobile Designers
| Need | Tool |
|---|---|
| Game design document | Notion |
| UI / screen prototyping | Figma |
| Visual systems sketching | Miro |
| Static balance math | Google Sheets |
| Game economy design + simulation | itembase |
| LiveOps planning (calendar) | Notion / Airtable |
| LiveOps economy simulation | itembase |
You don't need all of these on day one. But if you're building a F2P game with a virtual economy — any game with currencies, items, progression systems, or live events — you need something more than a spreadsheet. That's the gap itembase is built to fill.
Frequently Asked Questions
What is a game design tool?
A game design tool is any software that helps a game designer document, prototype, model, simulate, or communicate their game's design. This includes documentation tools (Notion), visual prototyping tools (Figma), systems modeling tools (Machinations), and economy simulation tools (itembase).
What tools do indie game designers use?
Most indie designers use a combination of Notion for documentation, Figma for UI, Google Sheets for balance math, and either Machinations or itembase for systems and economy work. The exact stack depends on the game type — economy-heavy games need dedicated economy tooling.
Is there a game design tool specifically for game economies?
Yes. itembase is purpose-built for game economy design and simulation. It's designed for designers working on F2P, mobile, and live games where virtual currencies, items, progression systems, and LiveOps events need to be designed, balanced, and tested together.
What's the best free game design tool?
For documentation, Notion has a generous free tier. For UI prototyping, Figma is free for individuals. For economy and systems work, itembase offers free access to start building and simulating your game economy.
Do I need a game design tool if I'm a solo developer?
Yes — arguably more than a team does. Solo developers can't rely on verbal alignment or shared context. A tool that makes your design visible and testable is what keeps your project from drifting as it grows.
Start Designing Your Game Economy
If you're building a game with any kind of virtual economy — currencies, items, progression, loot, events — try itembase. It's the game design tool built specifically for economy-heavy and live games.
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