Building a 4X Strategy Game in Flutter and Flame

Ernest — Fri, 26 Jun 2026 15:49:24 +0000

For some time now, I’ve been building a 4X strategy game using Flutter and Flame.

It started as a mix of three things:

an experiment,
a way to learn Flutter and Dart more deeply,
and a question I wanted to answer for myself:

How far can this stack realistically go in a larger game project?

Flutter is usually associated with apps. Flame is often used for smaller games, prototypes, arcade-style projects, or learning game development. But I wanted to see what happens when you try to use them for something more ambitious: a strategy game with maps, systems, UI, simulation logic, and long-term project structure.

Why a 4X game?

4X games are interesting because they are not just about rendering things on screen.

They are systems-heavy.

You have to think about:

map generation,
turns and progression,
economy,
ownership,
visibility,
player actions,
AI,
UI state,
serialization,
performance,
and a lot of tiny rules that eventually start interacting with each other.

That makes it a pretty good stress test for a stack.

Not because it needs the flashiest graphics, but because it needs structure.

Why Flutter and Flame?

The nice thing about Flutter is that it gives you a very strong UI toolkit. Strategy games usually need a lot of interface: panels, buttons, tooltips, lists, overlays, menus, inspectors, dialogs.

That part feels very natural in Flutter.

Flame gives the project the game loop, rendering layer, components, and the game-oriented foundation. So the combination is interesting:

Flutter for the interface. Flame for the game world. Dart for the shared logic.

Is it the most obvious stack for a 4X game? Probably not.

But that is exactly why I wanted to try it.

What I’m learning

One of the biggest lessons so far is that architecture matters very quickly.

In a small prototype, you can get away with putting logic wherever it feels convenient. In a strategy game, that stops working fast. Game state, UI state, rendering state, and simulation rules all want to grow in different directions.

So the project became less about “can I draw a map?” and more about questions like:

Where should the actual game rules live?
How much should Flame components know about simulation state?
How do I keep UI responsive without mixing it too deeply with game logic?
What should be serializable?
How do I make the game easy to debug as systems grow?

Those questions are where the project became genuinely useful as a learning exercise.

The code is public

I’ve made the code public, partly because I think open projects are more useful when they show the messy middle, not only the polished final result.

If you are curious about Flutter, Flame, Dart, game architecture, or just want to see someone trying to build a bigger strategy game with this stack, feel free to take a look.

Website: https://aonw.net

Devlog: https://ernest.dev

GitHub: https://github.com/ernestwisniewski/aonw

What’s next?

I’m continuing to build the game and write about the process as I go.

The goal is not only to make a playable 4X strategy game, but also to learn how practical Flutter and Flame can be for a project that grows beyond a simple prototype.

If you have experience with Flame, Flutter performance, game architecture, or strategy game systems, I’d be happy to hear your thoughts.

This is still an experiment.