A multiplayer graffiti game in your browser: paint trains with your crew

TrainWars is a free graffiti game you can play online with friends. Make a room, send the link, and up to 8 writers paint the same train or wall at the same time, in a computer browser with nothing to install. Every stroke, drip and fill shows up on everyone's screen as it is sprayed.
Graffiti has always been social. You go to the yard with your crew, someone keeps an eye on the gate, you split the letters, you share caps, and afterwards you stand back together and take the photo. Most graffiti games leave all of that out: it is you, alone, with a wall. TrainWars has online rooms to put the crew back in.
How a room works
- Sign in. Rooms are for TrainWars accounts. Signing up is free and takes an email address.
- Make a room. Press Play, pick Online, then Make a room and choose a map. You get a 6-letter room code and a link.
- Send the link. Your friends open it, or type the code under Join a room. Up to 8 players fit in one room.
- Paint. In a private room the host starts the session from the waiting room. A public room has no waiting room: players walk straight in.
What you share in a room
- The same paint. Every stroke goes to every player as it is sprayed: the fill, the overspray, the drips that run when a can is held still. A player who joins late gets the whole wall first, then paints on it.
- The same place. You see the other writers as characters on the map, where they stand and where they spray. On the Alexanderplatz map the U-Bahn runs through on the same clock for everybody, so the whole room knows when to get off the track.
- A chat. Short messages, up to 140 characters, run through a bad-word filter before anyone sees them. Press Enter to talk.
Private or public
| Private room | Public room | |
|---|---|---|
| Who can join | Anyone with the code or link | Anyone signed in, from the list under Join a room |
| Start | The host starts from a waiting room | Players walk straight in |
| Good for | Your crew, a planned piece | Meeting other writers, a quick session |
| The wall | Stays while anyone is in the room | Starts clean once everyone has left |
Open public rooms also show on the TrainWars start page, with the map and how many players are in. A full room is marked Full.
Which maps you can paint together
Every player in a room needs the room's map. The free maps only need a free account.
| Map | What you paint | Who can join |
|---|---|---|
| Stockholm Metro yard | A C14 subway train at the edge of a forest | Free |
| Subway tunnel | An electrical house deep in a Stockholm tunnel | Free |
| Berlin Metro layup | A yellow two-car Class G in a stabling tunnel | Free |
| Alexanderplatz | The tiled track wall of the U2 station | Free |
| Warsaw Metro depot | A red and cream 81-717 in a depot hall | Free after sharing your invite link |
| Oslo, Paris, Madrid, Copenhagen | A T1300, an MF67, a 2000-series and an S-tog backjump | Full Game |
More about each train: the TrainWars yards.
Painting with other people: what works
Painting with others is a different skill from painting alone. A few things that make a room session better:
- Agree on the spot first. Say in the chat which part of the train you take. A two-car train fits two or three pieces side by side.
- Split the work, not the letters. One writer fills, the next one does the outline and the 3D. It is how crews finish a full car in one session.
- Leave a gap. Overspray travels. Keep a hand's width between your piece and the next, and use a thinner cap near the edge.
- Never go over work in progress. If a piece is not finished, it is not yours to touch. That is the first room rule, too.
- Take the photo together. When the train is done, use the camera: the flash shot is the keepsake, and you can post it to the community wall.
Keeping what you painted
A room is not saved: when everyone has gone, its wall goes too. To keep a piece, take a photo with the camera button, or save the whole wall to your blackbook as a page while you are still in the room. Photos can go on the community wall, where other players like them. The MIGHTY piece above was posted there.
The rules in public rooms
The first time each day you walk into a public room, two rules come up:
- Don't cross work in progress. Leave other players' pieces alone while they paint.
- No hate. No hateful messages in the chat, and none in your paint.
Open the player list from the player count and press Report next to a name. The report takes a screenshot of what you see and the player's last chat lines. When enough players in the room report the same writer, that writer is taken out of the room and cannot come back to it. Every report also goes to the TrainWars team, who can ban an account from online rooms.
Other multiplayer graffiti games
Most graffiti games are single player. Bomb Rush Cyberfunk and Jet Set Radio are played alone, and so is Marc Ecko's Getting Up. In VR, Kingspray Graffiti has had online multiplayer for years, and Graffism VR lists multiplayer among its plans. If you do not own a headset, TrainWars runs in the browser you already have. For the full comparison, see the best graffiti games in 2026.
Frequently asked questions
Is there a multiplayer graffiti game?
Yes. TrainWars has online rooms where up to 8 players paint the same subway train or station wall together in real time, in the browser. In VR, Kingspray Graffiti also has multiplayer.
Can I paint graffiti online with friends for free?
Yes. Making and joining rooms is free with a TrainWars account (sign-in by email). The free maps work in rooms; the Full Game maps need every player in the room to own the Full Game.
How many players fit in one room?
Up to 8 at the same time.
Does my friend need the same map?
Yes. Every player needs the room's map. On a free map that is only a free account.
Is the painting in a room saved?
The wall lives in the room while people are in it. Take a photo, or save the wall to your blackbook as a page, before the last player leaves: an empty public room starts clean.
Can I play rooms on my phone?
Rooms work in a desktop or laptop browser for now. A room link opened on a phone tells you to open it on a computer.
What happens if someone ruins a piece?
Every player in a public room can report another player, with a screenshot. Players reported by others are taken out of the room, and an account can be banned from online rooms.

