Best Io Games

249+ iOS apps & games curated and reviewed

4.5 avg rating
20 free apps & games
Updated August 2026

Every iPhone needs a few good io games. We benchmark 249+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.

Compare top Io Games (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Paper.io 2Paper.io 2Free4.5★ (2.9M)YesYesSep 2026
2Agar.ioAgar.ioFree4.5★ (221K)YesYesSep 2026
3slither.ioslither.ioFree3.8★ (3K)NoYesSep 2026
4diep.iodiep.ioFree3.8★ (20K)YesNoSep 2026
5Survivor!.ioSurvivor!.ioFree4.7★ (244K)NoYesSep 2026
6Harvest.ioHarvest.ioFree4.5★ (48K)YesYesSep 2026
7Hole.ioHole.ioFree4.6★ (2M)YesYesSep 2026
8Crowd CityCrowd CityFree4.7★ (1M)YesYesSep 2026

Top Picks for Io Games

Paper.io 2#1

Paper.io 2 by Voodoo

The world's #1 IO game
Editor's Choice
🎮 Games
4.5😐(2.9M ratings)
FreeAdsIn-App Purchases
#11in Games
Paper.io 2 screenshot 1
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Paper.io 2 screenshot 5

Expand your territory by drawing lines and capturing zones in this addictive multiplayer game. Outmaneuver opponents in fast-paced battles, collect unique skins, and aim to conquer the entire map.

What We Love

  • 🚀 Smooth gameplay
  • 👍 Fun and addictive
  • 🎨 Variety of skins and characters
  • 📱 Works offline

Room to Improve

  • 🔍 Glitches and bugs causing loss of progress
  • 💸 Excessive ads, even after paying for ad removal
  • 🤖 Unclear if playing against real players or bots
  • 🕰️ Frustrating mid-game ads interrupting gameplay
Agar.io#2

Agar.io by Miniclip.com

Play with friends online
Strong Contender
🎮 Games
4.5😐(221K ratings)
FreeAdsIn-App Purchases
Agar.io screenshot 1
Agar.io screenshot 2
Agar.io screenshot 3
Agar.io screenshot 4
Agar.io screenshot 5
Agar.io screenshot 6

Grow your cell by consuming smaller cells and avoiding larger ones in this online multiplayer game. Master tactics like splitting and dodging to become the biggest cell. Unlock secret skins with special usernames.

What We Love

  • 🚀 Addictive gameplay
  • 🔥 Iconic game
  • 💎 Great rewards system
  • 🎨 Customizable skins

Room to Improve

  • 🔍 Difficulty for new players
  • 🕰️ Slow progression
  • 💰 Excessive ads and microtransactions
  • 🔒 Lack of account portability
  • 🐛 Frequent crashes and lag
  • 🕹️ Unbalanced gameplay (teamers, macros)
slither.io#3

slither.io by Lowtech Studios LLC

Multiplayer slither game
Worth Considering
🎮 Games
3.8😐(3K ratings)
FreeIn-App Purchases
#40in Games
slither.io screenshot 1
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slither.io screenshot 3
slither.io screenshot 4
slither.io screenshot 5
slither.io screenshot 6

Compete against other players in a multiplayer game where you grow by consuming the remains of defeated opponents. Outmaneuver larger players to win and become the longest slither.

What We Love

  • 🚀 Addictive gameplay
  • 👍 Customizable snake skins
  • 🚀 Offline mode available
  • 👍 No ads (if paid)

Room to Improve

  • 🐛 Frequent lags and freezes
  • 🐛 Glitches causing unfair deaths
  • 🐛 Inability to control snake movements
  • 🐛 Inappropriate player names
  • 💰 Ads and in-app purchases

More Io Games apps to explore

FAQ about Io Games

What are the best io games for iPhone?
Paper.io 2 tops our io games ranking as of August 2026, with a 4.5-star average from 2.9M App Store ratings, and it's free to download.
Yes — 20 of the top io games we rank are free to download, including Paper.io 2 and Agar.io.
Paper.io 2 shows ads and offers in-app purchases, according to its App Store listing as of August 2026.
We track 249+ io games on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
Paper.io 2 is a multiplayer game where players draw trails to expand their territory and capture zones. It's a fast-paced territory capture battle that's easy to learn but challenging to master.
Key features include satisfying drawing and arcade gameplay, fast-paced online multiplayer battles, and the ability to collect and customize over 100 skins and avatars.

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