Best Online Co-Op Games

250+ iOS apps & games curated and reviewed

4.6 avg rating
20 free apps & games
Updated September 2026

Looking for free online co-op games? 20 of our 250+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Compare top Online Co-Op Games (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Fireboy and Watergirl: OnlineFireboy and Watergirl: OnlineFree4.1★ (11K)NoYesSep 2026
2WavelengthWavelengthFree4.9★ (61K)NoYesSep 2026
3Plato: Fun Multiplayer GamesPlato: Fun Multiplayer GamesFree4.7★ (285K)NoYesSep 2026
4The Ghost - Multiplayer HorrorThe Ghost - Multiplayer HorrorFree3.9★ (4.3K)YesYesSep 2026
5Raft® Survival: MultiplayerRaft® Survival: MultiplayerFree4.5★ (37K)YesYesSep 2026
6Back2Back: 2 Player Co-op GameBack2Back: 2 Player Co-op GameFree4.7★ (150)NoYesSep 2026
7Draw N Guess MultiplayerDraw N Guess MultiplayerFree4.3★ (7.2K)YesYesSep 2026
8Coop TD: TogetherCoop TD: TogetherFree4.7★ (3.5K)YesYesSep 2026

Top Picks for Online Co-Op Games

Fireboy and Watergirl: Online#1

Fireboy and Watergirl: Online by Metin Yucel

Online 2 Multiplayer Fun Game
Editor's Choice
🎮 Games
4.1😐(11K ratings)
FreeIn-App Purchases
Fireboy and Watergirl: Online screenshot 1
Fireboy and Watergirl: Online screenshot 2
Fireboy and Watergirl: Online screenshot 3
Fireboy and Watergirl: Online screenshot 4
Fireboy and Watergirl: Online screenshot 5
Fireboy and Watergirl: Online screenshot 6

Embark on a cooperative adventure with two elemental characters to navigate challenging temples. Players must work together, with one controlling fire and the other water, to overcome obstacles and reach the exit. Collect diamonds for bonus points in this addictive online multiplayer experience.

What We Love

  • 💖 Cute characters
  • 👍 Fun gameplay
  • 🎮 Nostalgic experience
  • 🕹️ Great for multiplayer
  • 🔋 Works offline

Room to Improve

  • 🤬 Too many ads
  • 🐛 Glitches and bugs
  • 🔍 Difficult to find other players
  • 🤯 Some levels are impossible
  • 🤖 Poor communication between players
Wavelength#2

Wavelength by Palm Court LLC

A mind-reading party game
Strong Contender
🎮 Games
4.9😊(61K ratings)
FreeIn-App Purchases
#26in Games
Wavelength screenshot 1
Wavelength screenshot 2
Wavelength screenshot 3
Wavelength screenshot 4
Wavelength screenshot 5

A cooperative party game where players guess where a clue falls on a spectrum. Work together to read your friends' minds and win. Play in person or remotely with new content and features.

What We Love

  • 👍 Great game
  • 🤗 Fun for family and friends
  • 🎨 Gorgeous, cohesive, and clean design
  • 🕹️ Smooth gameplay with minimal lag
  • 💰 Worth the price, no ads

Room to Improve

  • 🤔 Lack of pass-and-play mode
  • 🔢 Limited number of prompts in free version
  • 🤝 Cooperative mode can be frustrating with larger groups
  • 🔊 Sound effects not shared between players
Plato: Fun Multiplayer Games#3

Plato: Fun Multiplayer Games by Plato Team Inc

Play and Chat with Friends
Worth Considering
🌐 Social Networking
4.7😊(285K ratings)
FreeIn-App Purchases
#52in Social Networking
Plato: Fun Multiplayer Games screenshot 1
Plato: Fun Multiplayer Games screenshot 2
Plato: Fun Multiplayer Games screenshot 3
Plato: Fun Multiplayer Games screenshot 4
Plato: Fun Multiplayer Games screenshot 5

Engage in over 50 multiplayer games seamlessly integrated with chat features. Connect with friends and new people through group chats, voice chat, and competitive play. Enjoy a private, ad-free experience with personalized profiles and game settings.

What We Love

  • 👍 Great game selection
  • 🤝 Ability to play with friends
  • 💰 Free to play with no ads
  • 🕹️ Fun and engaging gameplay
  • 🌐 Connects players globally

Room to Improve

  • 🐛 Frequent bugs and glitches
  • 🕰️ Long wait times to join games
  • 🚫 Lack of moderation leads to toxic behavior
  • 🔍 Difficulty finding games with preferred language
  • 🔒 Inability to leave certain games or chat rooms

More Online Co-Op Games apps to explore

FAQ about Online Co-Op Games

What are the best online co-op games for iPhone?
Fireboy and Watergirl: Online tops our online co-op games ranking as of September 2026, with a 4.1-star average from 11K App Store ratings, and it's free to download.
Yes — 20 of the top online co-op games we rank are free to download, including Fireboy and Watergirl: Online and Wavelength.
Fireboy and Watergirl: Online has no ads and offers in-app purchases, according to its App Store listing as of September 2026.
We track 250+ online co-op games on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
It is an online multiplayer game where two players control Fireboy and Watergirl, respectively. You must work together to navigate through various temples, avoiding hazards like water for Fireboy and fire for Watergirl, and reaching the exit.
Yes, there is a single-player mode available. You can switch between controlling Fireboy and Watergirl by tapping on their character icons to solve the levels by yourself.