Publisher: Crescent Moon Games
This 3D arena battler sees you chucking axes at your foes as a Viking warrior. Axe.io is far more fleshed out than your average .io game, with multiple modes and a pronounced progression system. It’s the .io genre all grown up.
Genre: Action, Multiplayer
Here’s the game that started the whole .io craze off in the first place. Agar.io is all about growing your cell as much as possible, gobbling up the smaller play cells as you go. It looks pretty ropey these days, but still plays great.
Crash of Cars
It’s not labelled as an .io game, but Crash of Cars certainly follows the ‘every person for themselves’ .io template. This time, though, the carnage is automotive and the graphics are uncommonly slick.
The creator of Agar.io returned with a cracking take on the genre he spawned. Diep.io is an altogether deeper, richer, and more tactical affair with tanks.
As you might expect from a game called Hexar.io, it’s full of six-sided shapes. The gameplay is a little more tactical than usual, too, requiring you to fence off territory using your coloured tail.
The .io genre has always been the bright and breezy brother of the Battle Royale genre, and Surviv.io brings the two even closer. It’s essentially a top-down, heavily simplified PUBG.
Probably the cutest .io game on the market, Mope.io is also a little bit different. You’re still gobbling and growing, but both of those activities are handled with a little more nuance and variety than normal.
Paper.io 2 isn’t particularly original (heck, it’s even a sequel), but it is one of the brightest and slickest .io games out there. It’s one of those where you must cordon off areas if you want to expand, adding a dose of risk and reward.
We’ve featured Paper.io 2 elsewhere on this list. Paper.io 3D offers the same basic territory-colouring premise, only… wait for it… in 3D.
Most .io games are not particularly pretty or packed full of detail. Warbot.io is both, with 100 player-controlled 3D robots waging glorious war on one another.
This wintery take on .io sees you rolling up giant snowballs, then pinging them into your opponent in a bid to send them spinning out of the arena. Lovely.
An appealingly chunky, 3D take on the whole multiplayer Snake concept. Slither your creature around an object-filled town, knocking stuff over and fencing rivals in.
Brutal adds a savagely tactile edge to the .io genre by requiring you to drag a giant spiked ball behind your car, swinging and flinging it into your opponents.
It’s Snake, but multiplayer. Or, if you want to be cooler, a casual version of the Tron bike-maze game. Guide your creature around an arena, attempting to trick your enemies into crashing into your extended tail.
Hole.io pinched the ‘control a hole’ premise from Donut County ahead of that game’s launch, which was a bit naughty. But it then applied that to the massively multiplayer .io genre, so it’s not a total clone. And it’s undoubtedly fun.