Cyberpunk 2077 in a Browser
Yes, it's real — a fan developer got the full Cyberpunk 2077 running in a browser tab on WebGPU. No install, no cloud streaming: the engine runs on your machine while game data streams in as you play. It's unofficial, experimental, and picky about hardware.
What it actually is: an unofficial port by developer omonkeyzz, live since October 22, 2026 at cyberpunk2077.lol. It compiles the game engine to WebAssembly (~248 MB wasm), renders through WebGPU on your own graphics card, and streams game archives in as you play. It only runs as a full browser tab — inside another page it can't get the shared memory it needs and refuses to boot.
Before you commit to the load: this is a fan project with no link to CD Projekt — no official statement exists either way. It's the base game only, single-player. Expect a first load of several minutes and close to 1 GB downloaded, with freezes and missing sound reported on weaker machines. It could disappear at any time — the developer's earlier browser Fortnite project was shut down after Epic intervened.
What you need to run it
| Requirement | Details |
|---|---|
| Browser | Recent desktop Chrome, Edge or Brave — Chrome on Android also works with touch controls. Firefox is not supported |
| Graphics | WebGPU with hardware acceleration on — a real GPU, not integrated graphics, for playable results |
| Technical | 64-bit WebAssembly (memory64) + shared memory — the tab must have cross-origin isolation available, which is why it can't run inside other pages |
| Connection | ~60 MB engine first, then game data streams as you play — one tester pulled near 1 GB before the first loading screen cleared |
| iOS | A separate 32-bit build exists at /game/ios — Apple devices get a lighter variant |
| Tabs | Only one game tab can run at a time |
How to start
- 1Use the right browser
Desktop Chrome, Edge or Brave with hardware acceleration turned on — check it's enabled in settings first.
- 2Open the page and wait
The first start downloads the engine, compiles shaders and pulls game data — measured at six-plus minutes on a good PC. Keep the tab in front; background tabs throttle.
- 3Click into the game
A click is needed before the browser releases sound and mouse control.
- 4New Game and go
Pick New Game in the menu, create your V, and you're in Night City — later loads are faster since data is cached.
What players report
It genuinely boots
Multiple outlets and testers confirm the full game loads and plays — not a video, not a demo. Save system and full world included.
First load is brutal
Engine download plus shader compilation means minutes of staring at a progress screen — that's normal, not a freeze.
Stability varies
Freezes, long loads and missing audio are common reports, especially on integrated graphics. Optimization is ongoing.
Not the Opera GX mod
Unrelated to 2024's official Opera GX Cyberpunk browser theme — that was a skin for a browser, this is the actual game.
FAQ
Is Cyberpunk 2077 really playable in a browser?
Yes — the fan port at cyberpunk2077.lol genuinely runs the full single-player game via WebGPU. It's experimental, not a polished release.
Is it official or legal?
No — it's an unofficial fan project with no affiliation to CD Projekt, and no official statement from the studio. Its future is uncertain.
Is it cloud streaming?
No — everything runs on your own CPU and GPU. That's why hardware still matters despite there being no install.
Why does it say my browser can't run it?
It needs shared memory (SharedArrayBuffer) and WebGPU — Firefox lacks support, and it refuses to run inside embedded frames or unsupported setups.
Does it include Phantom Liberty?
No — the port is the 2020 base game only, single-player.