Black Ops 1 Zombies in Your Browser
The viral fan port: the full 2010 Black Ops 1 zombies mode running on WebAssembly in a desktop tab — all ten maps, solo or in an online lobby, with no game files and nothing to install.
Before you open it: this black ops zombies browser game is heavy — a 1.5 GB memory heap plus a few hundred MB of map data on first load (cached after). If it black-screens or runs like a slideshow, hardware acceleration is off — the three fixes below cover nearly every report.
Getting in
- 1Open it in a desktop browser
Chrome, Edge or Firefox — current version, hardware acceleration on. Mobile browsers can't run it.
- 2Name and mode
Enter a name, then choose Single player or Multiplayer — multiplayer creates a lobby you can share with friends.
- 3Pick a gun set
Classic Black Ops weapons, or a Counter-Strike style loadout with its own recoil and movement feel.
- 4Choose a map
First visit to each map downloads its data into your browser — it's slow once, then cached and fast forever. A Horde mode toggle at the bottom of the map list runs a round-100 variant with up to 300 zombies.
- 5Click inside to capture the mouse
Press a key to start the round, then click the game area so your aim tracks properly.
All ten maps
The complete BO1 zombies lineup — the two launch maps, all four DLC packs, and the World at War remasters.
| Map | Origin |
|---|---|
| Kino der Toten | Base game |
| Five | Base game |
| Ascension | First Strike DLC |
| Call of the Dead | Escalation DLC |
| Shangri-La | Annihilation DLC |
| Moon | Rezurrection DLC |
| Nacht der Untoten · Verrückt · Shi No Numa · Der Riese | World at War remasters |
Runs badly? The three fixes
| Problem | Fix |
|---|---|
| Black screen or slideshow FPS | Hardware acceleration is off. Chrome/Edge: Settings → System → graphics acceleration on. Firefox: Settings → Performance → untick "recommended", tick acceleration. |
| Won't load / map stalls | Browser storage blocked or full. Private windows and strict cookie settings break the cache; keep a few GB of disk free. |
| Stutters in big hordes | The game reserves a 1.5 GB heap — close heavy tabs, use the Low quality preset, and try another browser if it persists. |
Know before you play
Unofficial and unaffiliated
A fan project — Activision and Treyarch have no involvement. It already survived one takedown notice and moved addresses in mid-October, so enjoy it while it's up.
Desktop only
The WebAssembly build needs a real keyboard, mouse and GPU. On a phone it simply won't run — no touch build exists.
Maps cache per browser
Downloaded map data lives in that browser's storage — clearing site data or switching browsers means downloading again.
Lighter alternative
If the port is too heavy for your machine, Nazi Zombies Portable is a lighter browser zombies game playable right here.