All IO Games
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Aquar.io
Lead an underwater swarm of creatures
7.9135K2.1K -
Venge.io
Sleek 3D multiplayer shooter
8.3133K1.4K -
Krunker
Fast-paced 3D browser shooter
8.1191K3.5K -
Microgravity
2D space combat and base-building
7.384K768 -
Battlepoint.io
Top-down 2D urban shooter
7.674K530 -
Stein World
Browser MMORPG with quests and dungeons
7.680K1.1K -
Oceanar.io
Underwater agar.io: eat fish, grow giant
7.3213K3.7K -
World of Pixels
Infinite shared pixel canvas
7.8100K1.4K -
Sworm.io
Snake game with splitting swarms
7.7119K1.8K -
Hex Bois
Hex empire combat
—550 -
Hole.io
Hole eats the city
—740 -
Letters in Space
Draw platforms to fly
—650 -
Mazmorra.io
Online dungeon crawler
—500 -
ORBz.io
Orbital arena combat
—540 -
Senpa.io
Agar-style cell eater
—490 -
Anguis.io
Multiplayer snake arena
—460 -
AstroRace.io
Spaceship drift racing
—560 -
Baseball Bros!
Browser multiplayer baseball
—360 -
BattleTabs
Bite-size strategy battles
—560 -
BigHole
Eat the city as a hole
10.0461 -
BitPlanets
Conquer the galaxy in RTS
—580 -
Bunk. Town
Virus-survival IO arena
—320 -
Chess Arena
Real-time fantasy chess
—490 -
Clanker.io
Fast-paced mech shooter
—550 -
The Free Idle Clicker
Idle clicker RPG
—410 -
CrushTime.io
Crush or be crushed arena
—390 -
CubeShot
Voxel 3D FPS
—620 -
Castle Wars
Castle-building card game
—490 -
DicePals
Roll for rare pets
—480 -
eParkour
First-person parkour challenge
—580 -
FactionRift.io
Faction territory conquest
—460 -
Ferals.io
Evolve from bug to dragon
—410 -
FindCat.io
Find the hidden cat
—500 -
Football Bros!
Browser multiplayer football
—520 -
Footix.io
Arcade browser soccer
—450 -
gigga.io beta
Fan-made diep.io sequel
—550 -
HexTank.io
PvP tank arena on hex
—540 -
Among Us
Among Us free-for-all
10.0491 -
Browser Fps
Sci-fi browser FPS
—590 -
Kart Bros!
Simple kart racing fun
—560 -
Koxo.io
Chain-and-ball arena combat
10.0421 -
Little Big Snake
Snake.io, polished & updated
—470 -
LOLShot.io
Aerial rocket-jump FPS
—560 -
Lordz2.io
Medieval warfare RTS .io
—410 -
Mana Blade
3D browser MMORPG
—690 -
SquadBlast
Side-scrolling team FPS
—620 -
Might and Monsters
Co-op monster hunts
—490 -
Mr. Mine
Dig deep, idle rich
—350 -
Neuronball
Robot sport team manager
—420 -
Obumo Games
Obumo's game collection
—390 -
Paper Racer
Stickman moto racing
—600 -
CrossBird
Mini crossword multiplayer
—440 -
PopSafari
Bubble-pop safari shooter
—490 -
Raccoon Retail
Raccoon shop chaos
—390 -
realmz.io
Dominate the realm
—580 -
ShipCraft.io
Build ships, conquer space
—540 -
Smash Karts
Kart battle arena
—510 -
Snowball.io
Snowball brawl arena
—700 -
Soccer Bros!
Browser party soccer
—500 -
Shell Shockers Also at shellshockers.website
Shell Shockers egg FPS
—610 -
An HTML5 multiplayer RTS
HTML5 multiplayer RTS
—470 -
Stug
Ricochet tank battles
—500 -
Subsnake
Pixel-art dig-and-grow snake
—400 -
Suprem.IO
Battle arena platformer
—470 -
Suroi
Open-source 2D battle royale
—390 -
survev.io
Surviv.io revived
—460 -
Swordbattle.io
Sword fighting arena
—570 -
Trappersquares.io
Trap placement strategy
—460 -
Triset.io
Fast territory-capture puzzle
—450 -
Voxorp
Space mining & combat
—510 -
Warbrokers.io
Free multiplayer FPS
—410 -
WizardWars.online
Tactical wizard duels
—610 -
WorldGuessr
Free Geoguessr alternative
—450 -
Wrestle Bros
Online pro wrestling brawl
—360 -
2v2.io
Fortnite-style 2v2 builder BR
—860 -
Agar3D
Classic Agar.io, now in 3D
—820 -
AntWar.io
Ant colony wars online
—570 -
Basket Bros
1v1 browser basketball brawl
—410 -
Battlegrounds2D.IO
2D PUBG in your browser
—580 -
BattleHex.io
Real-time hex strategy .io
—620 -
Brawlball
Party soccer with friends
—690 -
BrutalMania.io
Bloody arena brawler
—650 -
Cavegame.io
2D Minecraft survival online
—710 -
Chemz.io
Chemtrails multiplayer chaos
—530
What is an IO game?
IO game is a special kind of online game. First of all — IO game is a game which requires nothing to play but modern web browser and Internet connection. Second — IO game is free-to-play, massively multiplayer online game. Somebody in the Internet once described IO game as "A game that easy to understand yet hard to master". This is general yet very good description of the cool IO game. You can play it 5 minutes or you can play it 5 hours — in both cases you'll get a lot of fun. That's what make IO games really awesome!
There are different types of IO games. In fact you can find a game of any genre among all of IO games. It's not just simple action games like famous Agar.io or Slither.io. There are platformers, 2D shooters or racing. You can find even RPG IO games or real-time strategies. Today almost all popular game types can be found among IO games!