How do two people play a browser game together from two phones?

In three ways: each phone runs the game and joins the other with a code, both phones steer one big screen, or you pass one phone.

There are three ways, and a game's page tells you which one it offers. In the first, each phone runs its own copy of the game and the two are joined by a room or a code. In the second, a television or a computer shows the game and both phones become controllers. In the third, there is one phone and you take turns. All three can work in a phone browser with nothing to install, but each game supports only some of them, so check before you invite anyone.

What are the three ways to play together?

The first way suits two people who are apart, or side by side with a phone each. The second suits a sofa and a television. The third works anywhere, but only for games where players take turns.

How were the games below chosen?

On 25 October 2026 we took every game in the HeapPlay catalogue that has a way to play in a mobile browser and is marked for local, online or co-op multiplayer. That gave seven games out of 71. You can repeat the search with the catalogue's filters: online multiplayer in a phone browser and local multiplayer in a phone browser.

Every fact below comes from each game's HeapPlay page on that day. Three of the seven (Acid Jungle, Critter Billiards and KittenGalaxy) are made by HeapPlay itself. We have not played the games for this article and do not rank them; they appear in the order of the three ways.

Which games give each phone its own screen?

• Play here

  Critter Billiards

  PuzzleSingle playerMultiplayer

  HeapPlay

  ★ 5.0 (1 rating)

  • Desktop browser
  • Mobile browser
• Play here

  KittenGalaxy

  ArcadeSingle playerMultiplayerLeaderboard

  HeapPlay

  ★ 5.0 (1 rating)

  • Desktop browser
  • Mobile browser
  • TV browser
• 

  Kart Chaos

  ArcadeSingle playerMultiplayer

  Kart Chaos

  Not rated yet

  • Desktop browser
  • Mobile browser
• 

  Slime Volley

  ArcadeSingle playerMultiplayer

  ArcherLab

  Not rated yet

  • Desktop browser
  • Mobile browser

• Critter Billiards is billiards for children aged 3 to 10. One device opens a game and shows a QR code and a six-digit code; the other joins with its camera or by typing the code. Only the shots travel between the devices: there is no chat and there are no names.
• KittenGalaxy is an arcade shooter. Two players fly side by side and share lives, points and the shop. One player opens a room in the game and tells the other its six-digit code.
• Kart Chaos is a 3D kart racer. You open an online room to race friends, with text and voice chat. The page does not say how a friend joins the room.
• Slime Volley is slime volleyball with online rooms for matches from one-a-side up to four-a-side. On touch screens, on-screen buttons appear. The page does not say how a friend joins the room.

Which games turn phones into controllers for a big screen?

• Play here

  Acid Jungle

  ActionSingle playerMultiplayer

  HeapPlay

  ★ 5.0 (1 rating)

  • Desktop browser
  • Mobile browser
  • TV browser
• Play here

  KittenGalaxy

  ArcadeSingle playerMultiplayerLeaderboard

  HeapPlay

  ★ 5.0 (1 rating)

  • Desktop browser
  • Mobile browser
  • TV browser

Both games work the same way. Open the game in the browser of a television or a computer and it shows a QR code. Each phone that scans it becomes one player's controller, with the buttons on the phone and the game on the big screen.

• Acid Jungle is a first-person shooter, stated by its developer as 12+. With two players the screen is split down the middle. The phones are held sideways, and they talk to the screen through HeapPlay's relay; nothing is stored.
• KittenGalaxy takes one or two phones. The code can also be typed by hand on the phone instead of scanned.

On an iPhone, the Camera app reads a QR code; Apple's page on scanning a QR code with an iPhone or iPad shows where to find it and how to add a code scanner to Control Centre.

What if there is only one phone?

Then you need a game marked "Local multiplayer (same device)". Two of the seven fit two people on one phone: Ludo.surf, a 3D Ludo played against computer players or friends sharing the same device, and Critter Billiards, where two players take turns, each with an animal of their choice.

Faker Finder is also marked for one device, but it is a party game for 3 to 12 players, so it does not suit two.

How can you check a game's page before you start?

Four lines on the page answer most questions.

1. Players, under Details: "Online multiplayer" means the first way, "Local multiplayer (same device)" means turns on one device.
2. Ways to play: each way (desktop, mobile, television) is listed separately, with its own controls. A game that plays on a phone may still need a keyboard for a second player.
3. Compatibility: what was actually checked, and on what. For example, the mobile line for Critter Billiards says it was checked in a browser set to phone sizes and has not yet been tried on a physical phone.
4. Registration, Advertising and In-game purchases: "Not specified" means HeapPlay has no confirmed information, not that the answer is "no".

If you play with a child, also read the description for chat. Kart Chaos has text and voice chat; Critter Billiards states it has none.

Common questions

Do both phones need the same game installed? No. Every game here runs in the browser. Both players open the same game page; for HeapPlay's own games the page also shows a QR code that opens the game on a phone.

Do both players need to be in the same room? For the first way, the game's page describes joining by a room or a code, not by being nearby. For the second, both need to see the big screen. None of the seven pages says that both phones must be on the same Wi-Fi network.

Does either player need an account? Every way to play listed for these seven games says "No registration".

Why are so few games on the list? The catalogue holds 71 games, and most are for one player. New games are added regularly, so the same filters may show more later. If you have made a game two people can play from two phones, you can submit it.