Eat and grow 6
You start tiny. Everything smaller is food, everything bigger is death. The loop Agar.io invented in 2015, and the food-chain games that grew out of it.
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Mope.io
Land version of the food-chain idea. Mouse to dragon, with water, biomes and hiding spots that matter.
mope.io -
EvoWorld.io
Formerly FlyOrDie.io. Evolve through 40-plus flying creatures by eating the ones below you.
evoworld.io -
Stabfish.io
Fish with a spike. Stab other fish before they stab you and grow from what they drop.
stabfish.io -
Blob.io
An Agar-style cell game. Eat pellets and smaller players to grow, split to catch them, and pick a server and game mode before you start.
blobgame.io -
Cellcraft.io
Agar-style cell game on its own servers, with free-for-all and experimental modes and a chat. Eat smaller cells to grow and keep away from bigger ones.
cellcraft.io -
Senpa.io
Cell game with fast servers, a large skin catalogue and modes built for split tricks and team play.
senpa.io
Just this list: funny.io/blob/
Snake 5
Slither.io and its descendants. Grow long, cut people off, never touch another body with your head.
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Wormate.io
Slither with sweets and power-ups. Cakes, candy and potions on the map change your speed, size and magnet range.
wormate.io -
Powerline.io
Tron-style lines instead of snakes. Ride close to other lines to charge a speed boost, then cut them off.
powerline.io -
Little Big Snake
Snake with a persistent account, evolution levels and a bug companion. Deeper than Slither, and it has ads and purchases to match.
littlebigsnake.com -
Gulper.io
A fast snake game. Eat to grow longer and make other snakes crash into your body, while keeping your own head clear of theirs.
gulper.io -
Worms Zone
Snake game with food to eat instead of plain pellets. Grow by eating, cut other worms off so they crash into you, and try to be the longest of the day.
worms.zone
Just this list: funny.io/snake/
Top-down shooters 9
Tanks, planes, ships and flails seen from above. Most of them owe something to Diep.io's upgrade tree.
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Diep.io
Drive a tank, shoot shapes for XP, spend points on a build. Dozens of tank classes branch off a single tree, and the best players know every matchup.
diep.io -
Starblast.io
Vector spaceship arena. Mine asteroids for gems, upgrade through a ship tree, and fight in team, survival and invasion modes.
starblast.io -
Defly.io
Helicopter shooter where you also claim territory by building walls. Half Diep, half Paper.io.
defly.io -
Gats.io
Top-down shooter with a weapon pick at spawn, crates for cover and perks as you level. Rounds are fast and mostly about positioning.
gats.io -
Drednot.io
Crew a dreadnought with strangers. Someone flies, someone loads the cannons, someone patches the hull mid-battle.
drednot.io -
BattleDudes.io
Top-down team shooter with destructible buildings, vehicles and a sizeable weapon list. Plays like a 2D Battlefield.
battledudes.io -
Digdig.io
Dig through dirt to grow, then hunt other diggers. Tunnels become tactics: trap someone in a dead end and they are yours.
digdig.io -
Copter.io
Fly a helicopter around a top-down arena and shoot everyone else. Upgrade as you score and use special abilities to turn a fight.
copter.io -
Nightpoint.io
Top-down pixel shooter. Fight zombies and other players to survive, alone or in teams, and press space to dash out of trouble.
nightpoint.io
Just this list: funny.io/tanks/
Survive and build 11
Gather, craft, build a base, defend it. MooMoo.io made the template and the rest went in every direction from there.
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Hordes.io
A small 3D MMO that loads in seconds. Four classes, two factions, dungeons and a real economy.
hordes.io -
Lordz.io
Collect gold, recruit an army, build houses and towers, march on the other lords. A light RTS in io clothing.
lordz.io -
Starve.io
Cold, hunger and other players will all kill you. Craft tools, build a fire and dig into the biomes before the night does.
starve.io -
Zombs.io
Build a base around your gold stash by day, survive the zombie waves by night. Party up and the waves scale.
zombs.io -
Devast.io
Starve's post-apocalyptic follow-up. Radiation, zombies and scavenging, with the same unforgiving crafting loop.
devast.io -
Dynast.io
Top-down survival with crafting, farming and base building on a persistent map.
dynast.io -
Lordz2.io
The sequel adds unit types, a research tree and bigger battles.
lordz2.io -
YORG.io
Tower defense meets factory building. Mine, refine, connect a supply chain and hold off zombies every night. Single player, but pure io in spirit.
yorg.io -
Taming.io
MooMoo-style gathering and base building with tameable animal companions that fight beside you.
taming.io -
Sploop.io
A polished MooMoo-like with ages, hats and a competitive clan scene. Combat is faster and more skill-based than the original.
sploop.io -
Tribals.io
3D survival with tribes, crafting and raids. Closer to Rust than to MooMoo.
tribals.io
Just this list: funny.io/survival/
Strategy and territory 6
Claim land, hold it, take someone else's. From the twitchy grid-claiming of Splix to hour-long map wars in Territorial.
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Splix.io
The original grid-claiming game. Tighter and blockier than Paper.io, with a proper leaderboard.
splix.io -
Generals.io
Turn-based-feeling RTS on a grid. Capture cities, grow your army every tick, take the enemy general. A real competitive scene.
generals.io -
Superhex.io
Same claim-and-cut loop on a hex grid, which changes how corners and traps work.
super-hex.io -
Colonist.io
Settlers of Catan in the browser, with ranked matches and expansions. Free to play, no download.
colonist.io -
Tileman.io
Territory game with levels, unlockable abilities and a slower, more strategic pace.
tileman.io -
Territorial.io
Claim land on a map, balance troops against interest, decide when to attack. Hundreds of players per match and games that last an hour.
territorial.io
Just this list: funny.io/strategy/
Battle royale 5
Drop in, loot, and outlast a shrinking circle. The 2D versions load in seconds and finish in minutes.
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Surviv.io
The 2D battle royale that defined the format. Shut down in 2023, brought back by Kongregate in March 2026. Loot, shrink, survive.
surviv.io -
BuildRoyale.io
Battle royale with Fortnite-style building. Harvest materials, throw up walls, shoot through the gaps.
buildroyale.io -
Yohoho.io
Pirate battle royale on a shrinking island. Collect coins to get bigger, swing a cutlass, and use a dash to close distance.
yohoho.io -
Suroi.io
Open-source successor to Surviv.io, built after the original shut down. Same top-down looting and shrinking zone.
suroi.io -
Craftnite.io
Blocky battle royale. Build stairs, dig tunnels and take other players down until you are the last one standing.
craftnite.io
Just this list: funny.io/royale/
First-person shooters 7
Full 3D shooters that run in a browser tab. Krunker proved it could be done well, and a scene followed.
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Krunker.io
Blocky, fast, movement-heavy FPS that runs on almost anything. Custom maps, mods, ranked play and a market for skins.
krunker.io -
Shell Shockers
Egg-based FPS. Eight weapons, team and free-for-all modes, and a scene that has run for years on school Chromebooks.
shellshock.io -
Kirka.io
Blocky FPS in the Krunker mould with parkour, a market and steady updates.
kirka.io -
Venge.io
Hero shooter with four characters and unique abilities. Cleaner visuals than most browser FPS games.
venge.io -
Ev.io
Halo-style arena FPS with jump packs, sniper duels and a movement system that rewards practice.
ev.io -
Deadshot.io
Simple, sharp team shooter. Few modes, tight maps, low input lag.
deadshot.io -
Kour.io
Class-based voxel FPS with a strong movement system and a growing competitive scene.
kour.io
Just this list: funny.io/fps/
Party and playgrounds 8
Drawing games, social deduction, obstacle races and sandboxes. Best with a group call open.
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Skribbl.io
Pictionary in the browser. One draws, everyone guesses, points for speed. The default party game for remote teams.
skribbl.io -
Gartic.io
Draw-and-guess with public rooms in many languages, from the studio behind Gartic Phone.
gartic.io -
Sketchful.io
Drawing game with custom word lists and modes beyond plain guessing.
sketchful.io -
LOLBeans.io
Fall Guys style obstacle races. Eliminations each round until one bean is left.
lolbeans.io -
Bloxd.io
Minecraft-like sandbox with parkour, building lobbies and a dozen minigames. Huge with younger players.
bloxd.io -
Smash Karts
Mario Kart battle mode in the browser. Grab weapons, drive fast, ram people off the map.
smashkarts.io -
Drawasaurus
A drawing and guessing game like Pictionary. Draw the word you are given while players from around the world guess it, or open a private room for friends.
www.drawasaurus.org -
Vectaria.io
A blocky 3D world with multiplayer minigames. Pick a mode, drop into a round with whoever is online and play it out against the clock.
vectaria.io
Just this list: funny.io/party/
Arcade, physics and puzzle 4
Games that do not fit the other boxes. Sumo physics, curve-fever trails, competitive Tetris.
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Zlap.io
Swing a mace on a chain. The bigger you get, the bigger the mace, and the easier you are to hit.
www.zlap.io -
Ducklings.io
Collect ducklings and lead them home. Other ducks can steal them on the way. Sweet, low-stakes and short.
ducklings.io -
Gpop.io
A rhythm game on songs from YouTube videos. Hit the notes in time against other players in public or private rooms, and make levels of your own.
gpop.io -
Kugeln.io
2D platform shooter with ball characters. Runs light enough for any laptop.
kugeln.io
Just this list: funny.io/arcade/
No game matches . Try a shorter word, or a tag like coop, teams or classic.
What counts as an io game
Nobody owns the term, so here is the bar this index uses. A game gets in if it does all four:
- It starts in seconds. Open the link, pick a name, play. No account, no install, no launcher.
- Other people are in it. Live multiplayer in a shared arena, not a leaderboard on a single-player game.
- One idea, done well. Eat, grow, shoot, claim. You understand it before the first death.
- It still runs. Every link here was checked by hand. Dead games come out, relaunches go back in.
The .io ending helps but is not required. TETR.IO and Curve Fever Pro are here because they play like io games. Paper.io and Hole.io are not, because their web versions are gone and only the apps remain.
A short history
- Agar.io goes up. Matheus Valadares, 19, posts a link on 4chan. Within weeks it is one of the most searched games of the year. The .io domain was cheap and short, and it stuck to the genre.
- Slither.io. Steve Howse takes the same loop, swaps cells for snakes, and hits the top of the app charts. Every studio notices.
- Diep.io, Valadares again. Tanks, shapes and an upgrade tree. The template for a hundred top-down shooters.
- The flood. Splix, Mope, Deeeep, Starve, MooMoo, Zombs, Surviv, Skribbl, Krunker. Most of the classics on this page are from these three years.
- Lockdown. Browser games with no install and no login are suddenly the easiest way to play with friends. Skribbl, Betrayal and Territorial fill up.
- Surviv.io shuts down. Open-source rebuilds like Suroi and OpenFront show that a community can keep a format alive without its original owner.
- Kongregate brings Surviv.io back. Ten years in, most of the originals still run, and that is what this index tracks.