Unciv — Play Unciv Online Free
The beloved open-source remake of Civilization V — full 4X empire building that boots in seconds and saves to your device.
Unciv is open source (MPL-2.0) by Yair Mileguir and contributors; this is the project's official web build, embedded unmodified from its public host.
Keyboard Controls
| Key | Action |
|---|---|
| Mouse | Select units, cities, and tiles; drag to pan |
| Scroll / + - | Zoom in and out |
| Esc | Close menus |
| Menu button | Save, load, and change options (top-left corner) |
Quick Answer
Unciv is a free, open-source remake of Civilization V (MPL-2.0) that runs in your browser with no download and no account. Build cities, research technologies, explore, and conquer across eras against AI opponents — the complete single-player game, officially built for the web by the Unciv team. Games save to your device, so you can close the tab and pick your empire back up later.
How It Works
Click Launch and pick New Game
Choose your civilization, map size, and difficulty
Found your first city, set research, and grow your empire — the game autosaves locally
Key Facts
- An open-source Civilization V remake, not a lookalike minigame
- Complete 4X gameplay: cities, tech tree, culture, diplomacy, and war
- Official web build from the developers, embedded unmodified
- Saves persist locally in your browser between sessions
- Includes the mod browser with dozens of free extra civilizations
Frequently Asked Questions
Is Unciv the same as Civilization V?
Unciv is an original open-source implementation (MPL-2.0) of the Civilization V ruleset, built by Yair Mileguir and a large contributor community. It is not made by or affiliated with Firaxis or 2K — it is an independent project that recreates the Civ V experience with original code and art, and adds its own quality-of-life features like faster turns and a built-in mod browser.
Where are my saves stored?
In this embed, saves live in your browser’s local storage on your own device — the same behavior as the desktop version’s local saves. Nothing is uploaded anywhere, and closing the tab does not lose your game. Because storage is per-browser, saves will not follow you to a different device.
Does it work on phones and tablets?
Yes — Unciv was designed mobile-first and its touch UI works well on tablets. On a phone the map can feel small but is fully playable; a larger screen simply makes empire management more comfortable.
Can I play multiplayer?
The web build supports Unciv’s multiplayer by cloud save, which requires creating an account with the Unciv project. Everything on this page works without one; multiplayer is entirely optional and your single-player games never leave your device.