29 Co-op games like Summer Islands that you should try

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Ranking compiled by Lluis Enric Mayans, Founder & Head of ContentUpdated May 19, 2026How this is calculatedOrdered by an attribute-similarity model, not editorial opinion.

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We filtered the 50 games similar to Summer Islands down to the 29 that fit the “Co-op” category. Age of Empires IV: Anniversary Edition, Mitos.is: The Game and Offworld Trading Company top the list, ranked by affinity and similarity score to Summer Islands.

iRank81/ 100

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The best co-op games like Summer Islands

29 similar games foundUpdated May 2026

Handpicked by our similarity algorithm, these are the titles with the highest gameplay match to Summer Islands. Each one has been evaluated across 15 real attributes — from combat style and progression mechanics to world structure and visual perspective — so every recommendation is based on how the game actually plays, not just its genre label.

#1Age of Empires IV: Anniversary EditionClosest on genre

iRank80

GenreStrategySubgenreRTS

SoloMultiplayerCo-opPvPOnlineManagementIsometric

Steam👍 85%· 53KRAWG👍 74%· 106MC75IGDB81· 4OC83· 100

Year 2020Dev Forgotten Empires · Xbox Game StudiosPlaytime ~3hOn PC

✓ Both are real-time strategy games — sharing real-time strategy, deep simulation and single-player focus

≠ Stands apart with combat tactical, historical setting and setting medieval, while skipping sandbox freedom

Age of Empires III: Definitive Edition completes the celebration of one of the most beloved real-time strategy franchises in definitive form with enhanced features and modernized gameplay.

Genre100Game mode94Progression62Visuals51

GenreStrategySubgenreRTS

MultiplayerPvPCo-opOnlineSoloCasual

Steam👍 81%· 12KRAWG👍 18%· 68

Year 2015Dev Freakinware StudiosPlaytime ~1hOn PC · Apple Macintosh

✓ Fits the real-time strategy games cluster, with real-time strategy, deep simulation and vibe casual

≠ Stands apart with survival mechanics, punishing difficulty and cozy, relaxing feel, while skipping sandbox freedom

Eat cells or die trying! Warning: Incredibly addicting Multiplayer Game ! ** LAG: If you experience high latency, please open the Settings Menu and change your server location ** You are a cell, wandering around looking for smaller cells to absorb and grow.

Where it drifts furthest from Summer Islands: visuals.

It predates Summer Islands by 10 years, with what that implies technically.

Genre100Game mode94Tone74Visuals0

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Steam

#3Offworld Trading CompanyClosest on game mode

iRank76

GenreStrategySubgenreRTS

SoloMultiplayerCo-opPvPOnlineManagementIsometric

Steam👍 77%· 5.7KRAWG👍 58%· 122MC78IGDB89· 3OC81· 21

Year 2016Dev Mohawk Games · Stardock EntertainmentPlaytime ~4hOn PC · Apple Macintosh

✓ Both are real-time strategy games — sharing real-time strategy, deep simulation and single-player focus

≠ Stands apart with survival mechanics, strong narrative focus and setting scifi, while skipping sandbox freedom

In the sci-fi game Offworld Trading Company, the player can lead an interplanetary corporation in a futuristic trade war for control of Mars. ###Gameplay The game mixes resource mining and construction used in real-time strategies with a stronger economic element.

Where it drifts furthest from Summer Islands: tone and visuals.

On reception: its Steam reviews are mostly positive, against very positive for Summer Islands.

It predates Summer Islands by 9 years, with what that implies technically.

Genre100Game mode96Progression59Visuals39Tone0

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Steam GOG Epic

#4Total War: WARHAMMER III

iRank78

GenreStrategySubgenreRTS

SoloMultiplayerCo-opPvPOnlineIsometric

Steam👍 70%· 143KRAWG👍 79%· 68MC85IGDB78· 3OC86· 72

Year 2022Dev Creative Assembly · SEGAPlaytime ~17hOn PC · Apple Macintosh · Linux

✓ Fits the real-time strategy games cluster, with real-time strategy, single-player focus and multiplayer gameplay

≠ Its own twist: turn-based strategy, dark, oppressive atmosphere and strong narrative focus, while skipping deep simulation

Far beyond the world and its petty wars there exists a dimension of pure, malevolent magic: The Realm of Chaos. It is a terrible place, incomprehensible to the mortal mind. It whispers promises of power, but to behold it is to be seduced by it. To relinquish your soul to it. To become it.

Where it drifts furthest from Summer Islands: tone.

On reception: its Steam reviews are mostly positive, against very positive for Summer Islands.

Genre100Game mode95Visuals57Tone0

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Steam Epic

#5Command & Conquer: Red Alert 3

iRank82

GenreStrategySubgenreRTS

SoloMultiplayerCo-opOnlineIsometric

Steam👍 85%· 16KIGDB75· 4

Year 2008Dev EA Los Angeles · Electronic ArtsOn PlayStation 3 · PC · Mac

✓ Fits the real-time strategy games cluster, with real-time strategy, deep simulation and single-player focus

≠ Stands apart with melee combat, combat tactical and historical setting, while skipping sandbox freedom

Where it drifts furthest from Summer Islands: progression.

It predates Summer Islands by 17 years, with what that implies technically.

Genre100Game mode86Visuals57Progression0

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Steam

#6The Lord of the Rings: The Battle for Middle-earth II

iRank81

GenreStrategySubgenreRTS

SoloMultiplayerCo-opPvPIsometric

IGDB81· 6

Year 2006Dev EA Los Angeles · Electronic ArtsOn PC

✓ Same family of real-time strategy games: real-time strategy, single-player focus and multiplayer gameplay

≠ Stands apart with turn-based strategy, combat tactical and combat magic, while skipping deep simulation

It predates Summer Islands by 19 years, with what that implies technically.

Genre100Game mode88Visuals57

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#7Halo Wars

iRank70

GenreStrategySubgenreRTS

SoloMultiplayerCo-opPvPIsometric

IGDB70· 6

Year 2009Dev Ensemble Studios · Microsoft Game Studios

✓ Fits the real-time strategy games cluster, with real-time strategy, single-player focus and multiplayer gameplay

≠ Its own twist: combat tactical, setting scifi and base building, while skipping deep simulation

Where it drifts furthest from Summer Islands: progression.

It predates Summer Islands by 16 years, with what that implies technically.

Genre100Game mode88Visuals57Progression0

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#8Halo Wars 2

iRank78

GenreStrategySubgenreRTS

OfflineSoloMultiplayerCo-opIsometric

IGDB77· 19OC79· 131

Year 2017Dev 343 Industries · Microsoft StudiosOn PC · Xbox

✓ Fits the real-time strategy games cluster, with real-time strategy, offline and single-player focus

≠ Where it differs: brings setting scifi, while skipping deep simulation

It predates Summer Islands by 8 years, with what that implies technically.

Genre100Game mode85Visuals57

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Xbox

#9Plague Inc: EvolvedClosest overall match

iRank87

GenreStrategySubgenreRTS

SoloMultiplayerCo-opCasualSandbox WorldIsometric

Steam👍 94%· 62KRAWG👍 86%· 667MC80IGDB80· 3

Year 2015Dev Ndemic CreationsPlaytime ~5hOn PC · PS · Xbox

✓ Fits the real-time strategy games cluster, with real-time strategy, deep simulation and sandbox freedom

≠ Where it differs: brings survival mechanics, dark, oppressive atmosphere and combat tactical, while skipping procedural generation

Plague Inc: Evolved is a biological simulation/strategy game developed by Ndemic Creations. In Plague Inc: Evolved the player controls a disease, that infects patient zero in a selected country.

It predates Summer Islands by 10 years, with what that implies technically.

Genre100Tone88Game mode76Visuals57World56

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Steam Xbox PS

#10Europa Universalis IVClosest on progression

iRank86

GenreStrategySubgenreRTS

SoloMultiplayerCo-opSandbox WorldManagementIsometric

Steam👍 88%· 136KRAWG👍 83%· 396MC87IGDB85· 2

Year 2013Dev Paradox Development Studio · Paradox InteractivePlaytime ~6hOn PC · Apple Macintosh · Linux

✓ Fits the real-time strategy games cluster, with real-time strategy, deep simulation and sandbox freedom

≠ Where it differs: brings turn-based strategy, open world exploration and combat tactical, while skipping vibe casual

Europa Universalis IV is a global strategy game developed by Paradox Interactive. It is the fifth game in the series, not counting the add-ons. ###Gameplay The game can take place at any time starting from the late Middle Age to the Napolean Wars era.

Where it drifts furthest from Summer Islands: world.

It predates Summer Islands by 12 years, with what that implies technically.

Genre100Progression100Game mode76Visuals57World48

GenreStrategySubgenreRTS

SoloMultiplayerCo-opSandbox WorldManagementIsometric

Steam👍 33%· 4.8KRAWG👍 28%· 50IGDB52· 3

Year 2012Dev FireFly StudiosPlaytime ~4hOn PC · Apple Macintosh · Linux

✓ Fits the real-time strategy games cluster, with real-time strategy, deep simulation and sandbox freedom

≠ Where it differs: brings open world exploration, combat tactical and ranged combat, while skipping vibe casual

Stronghold 3: Gold is the long-awaited third installment in the award winning castle-building series. Set 10 years after the original, the Wolf it seems, has cheated death and during his painful recovery he’s become even more bitter and twisted. Now he seeks revenge.

Where it drifts furthest from Summer Islands: world.

On reception: its Steam reviews are mostly negative, against very positive for Summer Islands.

It predates Summer Islands by 13 years, with what that implies technically.

Genre100Game mode72Progression62Visuals57World44

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Steam

#12DETOURClosest on tone

iRank38

GenreStrategySubgenreRTS

SoloMultiplayerCo-opCasualIsometric

Steam👍 61%· 1.8KRAWG👍 3%· 62

Year 2011Dev Sandswept Studios · Epic Quest GamesPlaytime ~3hOn PC

✓ Fits the real-time strategy games cluster, with real-time strategy, deep simulation and vibe casual

≠ Stands apart with puzzle design, ranged combat and visual 2d, while skipping sandbox freedom

DETOUR is a real-time strategy game developed by Sandswept Studios. ###Gameplay DETOUR is a competitive multiplayer game, that can either be played against AI or with three other players. The main objective of DETOUR is to get your trucks to your destination safely.

On reception: its Steam reviews are mixed, against very positive for Summer Islands.

It predates Summer Islands by 14 years, with what that implies technically.

Genre100Tone100Game mode76Visuals53

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Steam

#13Age of Empires II: Definitive Edition

iRank88

GenreStrategySubgenreRTS

SoloMultiplayerCo-opManagementIsometric

Steam👍 95%· 178KRAWG👍 88%· 307MC85IGDB78· 3

Year 2019Dev Forgotten Empires · Microsoft StudiosPlaytime ~5hOn PC · Xbox

✓ Fits the real-time strategy games cluster, with real-time strategy, deep simulation and single-player focus

≠ Stands apart with combat tactical, ranged combat and historical setting, while skipping sandbox freedom

Age of Empires II: Definitive Edition celebrates the 20th anniversary of one of the most popular strategy games ever with stunning 4K Ultra HD graphics, a new and fully remastered soundtrack, and brand-new content, “The Last Khans” with 3 new campaigns and 4 new civilizations.

Genre100Game mode76Progression68Visuals57

GenreStrategySubgenreRTS

SoloMultiplayerCo-opIsometricSci-Fi

Steam👍 89%· 3.1KIGDB76· 3

Year 2007Dev Hellbent Games · THQOn PC

✓ Fits the real-time strategy games cluster, with real-time strategy, deep simulation and single-player focus

≠ Where it differs: brings setting scifi, setting space and base building, while skipping sandbox freedom

Where it drifts furthest from Summer Islands: progression.

It predates Summer Islands by 18 years, with what that implies technically.

Genre100Game mode76Visuals57Progression0

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Steam GOG

#15Total War: Shogun 2

iRank91

GenreStrategySubgenreRTS

SoloMultiplayerCo-opIsometricTactical

Steam👍 92%· 67KIGDB88· 4

Year 2011Dev The Creative Assembly · SegaOn Linux · PC · Mac

✓ Same family of real-time strategy games: real-time strategy, deep simulation and single-player focus

≠ Stands apart with turn-based strategy, combat tactical and ranged combat, while skipping sandbox freedom

It predates Summer Islands by 14 years, with what that implies technically.

Genre100Game mode76Visuals57

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Steam

Complete list of co-op games like Summer Islands

The full catalog of games sharing gameplay DNA with Summer Islands, ordered from highest to lowest similarity score. Use the filters above to narrow down by genre, setting or game mode and find the alternative that best fits your playstyle.