Best Worm Games to Play Free in Your Browser

A worm that grows every time it eats, and dies the moment it hits the wrong thing, is one of the oldest ideas in video games. It still works. These worm games all run in a browser tab, from a smooth offline arena you can start in one click to busy .io worlds full of other players and the classic grid Snake you might remember from an old phone.

From Snake to the .io worm

The idea goes back to the 1976 arcade game Blockade by Gremlin Industries, where players left a growing wall behind them and tried to make the other player crash. It became a household game in 1998, when Snake shipped on the Nokia 6110. The Snake genre has been cloned on almost every screen since.

The modern worm game took a different turn in 2016. Instead of a grid and four directions, you steer freely, crowd into one big arena with other worms, and die only when your head hits someone else’s body. That rule changes everything: the way to win a fight is to make the other worm crash into you. The picks below cover both styles, and every one of them is a free worm game online, in a browser, with no download required.

Quick picks

If you want…	Play
Instant play, no server, works offline once loaded	Worm (on dinogame.gg)
The original free-steering worm crowd	Slither.io
Fast growth and power-up potions	Wormate.io
Boosters, active skills and upgrades	Wormax.io
Missions, pets and a second life in the air	Little Big Snake
Colorful characters and events	Snake.io
The classic grid game	Google Snake or Snake Arena

1. Worm (play it right here on Dinogame)

Our Worm game puts you in a large round arena with 12 computer-controlled worms, each with its own name and skin. Your worm follows your mouse, your finger or the arrow keys, curving smoothly with no grid. Eat glowing pellets to grow longer and thicker, and watch the camera pull back as you get bigger.

How it plays: Hold the mouse button, Space or the on-screen Boost button to double your speed, at the cost of some length. If your head touches another worm’s body, you are out, and so is any computer worm that runs into you. Every dead worm turns into a pile of pellets, so the best moves are cut-offs that make rivals crash into your side. A leaderboard ranks the current arena, a minimap shows where everyone is, and your best length is saved in your browser. Controls: Mouse, touch and drag, or arrow keys and WASD; P or Esc pauses. Best for: A quick worm game with no account, no lag and no waiting for a match. Because every rival is computer-controlled, there are no other people in the arena.

2. Slither.io

Slither.io, created by Steve Howse and released on March 25, 2016, is the game that turned the free-steering worm into a craze. According to its Wikipedia entry, the browser and iPhone versions launched the same day, with Android following two days later.

How it plays: Your snake never stops moving and grows by eating pellets scattered across a huge circular map. Hit another snake’s body with your head and you die, leaving your remains as large glowing pellets for everyone else. Holding the mouse button, Space or the up arrow boosts your speed but burns mass, and hitting the edge of the map ends your run. A top-ten leaderboard ranks every server by length. Controls: Mouse to steer, hold the button or Space to boost. Best for: Players who want the classic online worm crowd with real opponents.

3. Wormate.io

Wormate.io launched in mid-2016, a few months after Slither.io, and it is credited to Ukrainian developer Oleksandr Godoba. It keeps the same core rules but trades pellets for a candy box of food: cakes, donuts, candies and other sweets cover the map.

How it plays: Worms grow much faster here than in most of the genre, so you can climb the leaderboard within the first minute. Colored potion bottles give short power-ups: the official site lists faster movement, sharper turning, a magnet that pulls in sweets at a distance, and growth boosts that multiply how much each bite is worth. The site also lists more than 30 worm skins. Controls: Mouse to steer. Best for: Players who like the worm formula with power-ups and fast progress.

4. Wormax.io

Wormax.io describes itself as a modern remake of classic Snake, with the walls and your own tail swapped for an arena full of other worms. It leans further toward an action game than most worm games, with items and abilities on top of the usual eat-and-grow loop.

How it plays: You grow by eating food and avoid running into other worms, especially giants that can trap you inside a loop. Boosters on the map include magnets, mass conservation, health, telescopes and toxics, and you also have super skills: acceleration, stop and transparency. Points you earn can be spent in a shop to upgrade your worm, and you can invite friends to play together with a personal link. Controls: Mouse to steer, plus the super skills. Best for: Players who want worm games with more strategy and progression.

5. Little Big Snake

Little Big Snake is a browser .io game with themed worlds that change with the seasons, and an official site you can play on directly. It takes the snake-arena idea and wraps it in missions, skills to upgrade and collectible skins that change every season.

How it plays: You grow by eating nectar and the energy left behind by defeated opponents, and you can surround smaller snakes to trap them. Bubbles and slugs are on the menu too. The unusual part comes when you die: you are reborn as a flying creature, which makes losing a little less painful. Controls: Mouse to steer. Best for: Players who want a free worm game with goals beyond the leaderboard.

6. Snake.io

Snake.io from Kooapps started on phones in April 2016 and is now playable in a browser at its own site. It stands out for its cast of themed snakes and regular events rather than plain colored skins.

How it plays: You start as a small worm and grow by eating, while trying to get rival snakes to bump their heads into your body. When they do, they disappear and leave pellets you can collect. The developer’s own FAQ calls it a multiplayer game played against other people in real time. Controls: Mouse, WASD or arrow keys to change direction; hold the left mouse button or Space to speed up. Best for: Players who want a lighter, more cartoonish take on the worm arena.

7. Google Snake

Google has its own browser version of the classic. Search for “play snake” or “snake game” and a Play Snake card appears at the top of the results. It runs right in the search page on desktop and on phones.

How it plays: This is the grid-based original: your snake moves in four directions, eats apples to grow and dies when it hits a wall or its own tail. A settings menu lets you change options such as the speed and the size of the board. Controls: Arrow keys on a computer, touch on a phone. Best for: Anyone who wants the old Nokia-style game without extras.

8. Snake Arena (play it right here on Dinogame)

Our Snake Arena sits between the two styles. It is played on a grid like classic Snake, but you share it with computer snakes, and a leaderboard tracks who is longest.

How it plays: Turn with the arrow keys, WASD or swipes, eat food to grow and avoid other snakes. Cut rivals off so they crash, then eat the food they drop, and try to survive the longest. Controls: Arrow keys, WASD or swipe. Best for: Players who like the arena idea but prefer the precise, square turns of classic Snake.

How we picked these worm games

Every game on this list is free and runs in an ordinary web browser today. We only included games that play like a worm or snake game: grow by eating, die on contact. Team17’s Worms series is a famous name, but it is a turn-based artillery game rather than a snake-style one, and we could not find a current official browser version, so it is not on the list.

If you are looking for a worm game unblocked on a school or office network, note that the online .io games need a live connection to their servers, and some networks filter them. Our Worm page loads once and then runs entirely in your browser, but whether any site loads on a managed network is up to that network’s filters.

Frequently asked questions

What is the best worm game to play in a browser?

For online play against real people, Slither.io is the original and still the most popular. For instant play with no server or sign-in, our Worm game gives you the same free-steering arena against computer worms.

Are there free worm games without online players?

Yes. Our Worm game and Snake Arena both use computer-controlled rivals only, so you never wait for a match and there is no lag. Google Snake is a solo game with no rivals at all.

What is the difference between Snake and worm .io games?

Classic Snake moves on a grid in four directions, and you lose by hitting the wall or your own tail. Worm .io games let you steer freely in any direction, crossing your own body is safe, and you lose when your head hits another worm.

How do you kill other worms in worm games?

You cannot bite them head-on. Get your body in front of their head, usually by boosting ahead and cutting across their path. When their head hits your body, they die and turn into pellets you can eat.

Can you play the Worms artillery games in a browser?

Not officially, as far as we could find. Team17’s Worms games are sold for PC and consoles. If you want a worm game online in your browser, the snake-style games on this list are the ones that run in a tab.

Start growing

Whether you want a packed online server, power-ups and skills, or the simple grid game from your old phone, there is a worm game here for you. Start with our free-steering Worm for a quick round, or open Slither.io for the crowd. And when you need a break from dodging worms, the Chrome Dino runner only asks you to jump at the right moment.