Knife.io

Contains adsIn-app purchases
3.7
6.83K reviews
Content rating
Everyone
1M+
Downloads
Content rating
Everyone
In-Game Purchases
Learn more
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About this game

The most addictive and innovative io game!

Pick up knives and wrap them around yourself to fight with other guys in the arena.
Use both offensive and defensive modes to defeat your enemies smartly!

How to Play
*Hold&drag to move and attack enemies!
*Release to enter defensive mode

Designed by Sleeeeepfly Studios from China
Updated on
Oct 10, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Location, App info and performance, and Device or other IDs
This app may collect these data types
Location, Personal info and 4 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

3.6
6.31K reviews
A Google user
April 26, 2019
It's an ok game but there should be different modes, and on some there should be infinite area to play in and infinite lives and instant respawn on some. And some of the knifes should have a ability if you do the task at least 20 times, and make some of the knifes easier to get like the "get 20 12 kill games" I never get in a game with 12 peaple for me too kill so maybe add the server size, decrees the obsticals on every server, make modes, and that's it if you can do any of these things I will 5
24 people found this review helpful
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A Google user
March 13, 2019
This game has a great idea behind it, and the developers coded some great AI which controls the other 'players' in the game, but honestly the game would be a lot better if it was actually online. I actually introduced my friend to the game and he couldnt believe that the other players were actually AI that's how good they are. (turning on airplane mode will reveal that you can continue playing without wifi btw)
88 people found this review helpful
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A Google user
April 15, 2020
I just try it and give my opinion, not bad, overall not bad. But what I hate is if you win or lose, no matter how many stars we get, still ads appear, 1 game playing 1 time advertising, the only way is to play offline. although online, we don't meet other players, but bot, very disappointing.
183 people found this review helpful
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What’s new

1. Fix some minor bugs
2. Optimize the gameplay
Join the battle now!