Mk48.io — Free Multiplayer Ship Combat Game
Free · No download · Plays in your browser · Works on Chromebooks
Mk48.io is a multiplayer naval combat game you play right in your web browser. You start with a small warship and earn points by collecting crates from the sea and sinking other ships. Spend them on upgrades through ten levels of ships, from torpedo boats to destroyers, battleships, submarines and aircraft carriers. There is nothing to install and no account to create: press Play and you are at sea.

How to play Mk48.io
- Steer by holding the right mouse button, or the left one. Your ship turns toward the cursor, and the farther away the cursor is, the faster it goes. WASD or the arrow keys also steer, and X stops. On a phone or tablet, touch in the direction you want to go.
- Fire with a click of the left mouse button, Space or E, or with a tap on a touch screen. Choose a weapon group with 1 to 6, or cycle with Tab.
- Collect crates by sailing into them. Sinking a ship also scores, and it leaves floating loot behind.
- Upgrade once you have enough points: pick a bigger ship at the top of the screen.
- Team up. In Fleet FFA, form a fleet with other players from the panel at the top left; members of a fleet cannot hurt each other. In 2 Fleets, every player sails for red or blue.
- Climb the ranks, from Ensign through Lieutenant, Commander, Captain and Colonel to Admiral. At the top rank you keep more points when you sink.
How do sensors work?
Every ship spots others with some mix of sight, radar and sonar. Radar cannot see below the surface, and sonar cannot hear anything in the air. Press Z to switch your sensors between passive and active. Active sensors show you more, but they give away your position, and homing weapons lock on to you more easily. Bigger ships are easier to detect, and passive sonar hears more when you move slowly, because your own noise drowns it out.
Tips
- Grab crates when damaged. Each one repairs your ship a little and speeds up reloading.
- Upgrade with care. A bigger ship runs aground more easily, damaging it.
- Stay passive to stay hidden. Switch to active sensors when you need to find a target, then switch back.
Play with friends
Press Play with friends to get an invite code. Share it, and your friends join you on the public server or on a party server of your own.
Frequently asked questions
Is Mk48.io free?
Yes. It is free to play in your web browser, with nothing to download.
Do I need an account?
No. Press Play and you are in.
Can I play alone?
Yes. Online servers include bots, and the cloud icon on the start screen switches to single player, offline.
Does it work on a phone or Chromebook?
Yes. Mk48.io runs in any modern browser, on desktops, laptops and Chromebooks, and on phones and tablets with touch controls.
Play Mk48.io unblocked
Mk48.io is a lightweight browser game. It runs on almost any device with a modern browser, including Chromebooks and other low-powered laptops, with no downloads or plugins. Play Mk48.io now, free.
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