Best Paper Io Online Apps & Games

249+ iOS apps & games curated and reviewed

4.5 avg rating
19 free apps & games
Updated September 2026

Out of 249+ paper io online apps and games on iOS, 19 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Compare top Paper Io Online Apps & Games (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Paper.io 4Paper.io 4Free4.4★ (14K)YesYesSep 2026
2slither.ioslither.ioFree3.8★ (3K)NoYesSep 2026
3Agar.ioAgar.ioFree4.5★ (221K)YesYesSep 2026
4String.ioString.ioFree4.5★ (1.8K)YesYesAug 2026
5Paper.ioPaper.ioFree4.5★ (156K)YesYesSep 2026
6Paper.io 2Paper.io 2Free4.5★ (2.9M)YesYesSep 2026
7Paper.io 3DPaper.io 3DFree4.5★ (305K)YesYesSep 2026
8Hexa.io - Online paper draw itHexa.io - Online paper draw itFree4.5★ (758)YesNoSep 2026

Top Picks for Paper Io Online

Paper.io 4#1

Paper.io 4 by Voodoo

Editor's Choice
🎮 Games
4.4😞(14K ratings)
FreeAdsIn-App Purchases
Paper.io 4 screenshot 1
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Experience a smooth 3D drawing and territory conquest game. Expand your zone, avoid other players, and aim to capture 100% of the map. Compete to claim the most land.

What We Love

  • 🎨 Colorful and visually appealing
  • ⚡ Addictive and engaging gameplay
  • 🎮 Fun and challenging
  • 🌐 Multiplayer experience

Room to Improve

  • 🐛 Frequent crashes and glitches
  • 🔧 Buggy controls and unresponsive movement
  • 📺 Excessive and disruptive ads
  • 💤 Lags and performance issues
  • 🔍 Limited visibility and camera issues
slither.io#2

slither.io by Lowtech Studios LLC

Multiplayer slither game
Strong Contender
🎮 Games
3.8😐(3K ratings)
FreeIn-App Purchases
#33in Games
slither.io screenshot 1
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slither.io screenshot 4
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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
Agar.io#3

Agar.io by Miniclip.com

Play with friends online
Worth Considering
🎮 Games
4.5😐(221K ratings)
FreeAdsIn-App Purchases
Agar.io screenshot 1
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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)

More Paper Io Online apps to explore

FAQ about Paper Io Online

What are the best paper io online apps & games for iPhone?
Paper.io 4 tops our paper io online apps & games ranking as of September 2026, with a 4.4-star average from 14K App Store ratings, and it's free to download.
Yes — 19 of the top paper io online apps & games we rank are free to download, including Paper.io 4 and slither.io.
Paper.io 4 shows ads and offers in-app purchases, according to its App Store listing as of September 2026.
We track 249+ paper io online apps & games on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
Paper.io 4 is a 3D game focused on territory conquest and drawing. Players aim to claim as much of the map as possible while avoiding other players and competition.
Key features include a smooth 3D drawing experience, competitive multiplayer gameplay, the ability to conquer territory, and the objective of capturing 100% of the map.