3d.city Game Online
3d.city is free and open source (GPL-3.0). Original project: github.com/lo-th/3d.city.git
How to Play 3d.city
Getting started with 3d.city takes seconds. Click inside the game frame to give it keyboard focus, then use the arrow keys (or WASD) to move and the mouse or spacebar to act — exact controls are shown inside the game. Build, plan and outsmart. Slow-burn strategy games that respect your brain. If the game saves progress, it is stored locally in your own browser, so you can close the tab and pick up where you left off. Press the fullscreen button for the big-screen experience.
Why Play 3d.city?
Zero friction is the biggest one: 3d.city runs right here in your browser — no download, no installer, no account, and nothing to pay. Because it is an open-source game (GPL-3.0), you get an authentic experience with no ads inside the game, no energy timers, and no upsells. It loads in seconds on any modern device, works alongside other tabs without eating your disk, and you can play it at home, at school or on the go as long as you have a browser.
Key Features of 3d.city
- Instant play — the whole game streams into your browser tab in seconds.
- Completely free — open-source (GPL-3.0), with no payments or locked features.
- Build, plan and outsmart. Slow-burn strategy games that respect your brain.
- Runs anywhere — Chrome, Edge, Firefox and Safari on desktop and mobile.
- Local saves — your progress stays in your own browser's storage.
- Full screen ready — one click switches to an immersive fullscreen view.
How 3d.city Works
3d.city is built with web technologies and delivered through this page in an embedded frame. When you press play, your browser downloads the game's code and assets — a few kilobytes to a few megabytes — and runs them locally at full speed. All the processing happens on your own device: input goes straight from your keyboard and mouse to the game, and rendering happens on your GPU. That is why browser games like 3d.city start instantly and feel just as responsive as downloaded ones.
Frequently Asked Questions
Is 3d.city free to play?
Yes. 3d.city is completely free on WASM Arcade — no payment, no account and no download required. It is an open-source game released under the GPL-3.0 license.
Do I need to download or install 3d.city?
No. The game runs entirely in your browser tab. Click play and you are in — there is nothing to install.
Can I play 3d.city on mobile?
Yes, in most cases. The game runs in any modern mobile browser, though some games play best with a keyboard. If the game supports touch controls, they will appear automatically on your screen.
Where is my progress saved?
In your own browser's local storage, on your device. Nothing is uploaded to a server. Clearing your browser data for this site will erase your 3d.city saves, so keep that in mind.