Out 4 Blood: a free co-op zombie survival shooter in your browser
Out 4 Blood is a first-person shooter about one thing: a squad of four, a building, and a horde that gets bigger every wave. It runs in your browser, with friends or with AI teammates, and it costs nothing.
Ten zombies on the first wave, fifty by the sixth, a hundred from the eleventh. Every tenth wave is a boss. How far your squad gets is the only score that counts.
How a game goes
Hold the line
Each wave has a number of zombies to kill, and the next one always has more. They come from every side, and they do not wait for you to reload.
Restock between waves
The ammo case refills your guns and opens the inventory: swap your rifle and your sidearm, buy back health with the money your kills earned, and take up to 3 mines.
Pick each other up
A survivor who goes down can be revived by a teammate. Every hit you take leaves a mark, though: trauma lowers your maximum health until you pay to heal it.
Expect the worst
Every tenth wave is a boss. Some waves change the rules altogether, and the ammo case does not stay where you left it.
With friends, or with bots
- A room seats four. Open one and send its invite link, join one from the list of open rooms, or press Quick game and be dropped into a squad.
- The seats nobody takes are filled by AI teammates that shoot, revive and call out. Turn them off if you would rather suffer alone.
- Push-to-talk voice chat and a text chat are built in: no other app to open.
- A friend can join a game that is already running, and a player whose connection drops gets their seat back.
- 3 difficulties: Nibble, Munch, Devour. From Munch up, your bullets hurt your friends too.
The maps
Shop
Its bad waves are hordes: the alarm goes off, the whole pack pours out of a single spot, and for a minute every one killed comes back.
Museum
It has a piano you can sit down at. Its bad waves are blackouts: the lights go out, and the squad has a minute to survive in the dark.
Work in progressLast Refuge
The dead take the stairs too...
Work in progressStreets
Where it all began...
The arsenal
XBR-9
Automatic rifle, and the gun you start with.
AR-10
Automatic rifle.
Double Barrel
Break-action shotgun. Two shells, nine pellets in each.
Winchester
Lever-action rifle, loaded a round at a time. It comes off its sights to work the lever after every shot.
Desert Eagle
Semi-automatic pistol, and your first sidearm.
SR-2M
Machine pistol: a sidearm that fires full auto.
Mines
Up to 3 at a time, free at the ammo case. Throw one and it goes off under the first zombie to walk up to it, or when somebody shoots it.
The survivors
The best survivors
Sign in, with Google or an e-mail address, and the game keeps your statistics, your place on the leaderboard and the 65 achievements there are to unlock. These players are at the top of it right now.
| Rank | Survivor | Best wave | Kills |
|---|---|---|---|
| 1 | cesharpe | 41 | 33,351 |
| 2 | Maki | 41 | 17,597 |
| 3 | Amazing | 27 | 8,646 |
| 4 | nibjorg | 21 | 4,937 |
| 5 | minouce | 22 | 4,636 |
What you need
- A computer, with a keyboard and a mouse or a gamepad. There are no touch controls: the game does not run on a phone or a tablet.
- Chrome, Edge, Brave or Opera. Firefox and Safari are not supported yet.
- Nothing to install, and no account: you can play as a guest. An account is only what keeps your scores.
There is a desktop app too, the same game in its own window. It is the way in from a browser the game does not run in, and it asks your computer for its dedicated graphics card, which a browser tends not to do.
Questions
Is Out 4 Blood free?
- Yes. The game is free to play, and there is nothing to buy. The money you see during a game is earned by killing zombies and is spent at the ammo case, on health.
Do I have to download or install anything?
- No. The game runs in your browser: open the page and play. A desktop app for Windows, macOS and Linux is there for players who want the game to run on their dedicated graphics card.
Which browsers does it run in?
- Chromium browsers on a computer: Chrome, Edge, Brave and Opera. Firefox and Safari are not supported yet. From those, the desktop app is the way in.
Can I play on a phone or a tablet?
- No. The game needs a keyboard and a mouse, or a gamepad. There are no touch controls.
Can I play alone?
- Yes. AI teammates take the seats of your squad that no player fills, so a solo game is still a squad of four. The host of a room can turn them off.
How many players can play together?
- Up to four in a room. Create one and send your friends its invite link, pick one from the list of open rooms, or let Quick game find one for you.
Is my progress saved?
- If you sign in, with Google or with an e-mail address: your statistics, your achievements and your place on the leaderboard are kept. As a guest you can play everything, but nothing is saved.
Does it work with a controller?
- Yes. A gamepad works in the menus and in the game.