5 Casual 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 5 that fit the “Casual” category. Plague Inc: Evolved, RollerCoaster Tycoon 2 and Mitos.is: The Game top the list, ranked by affinity and similarity score to Summer Islands.

iRank81/ 100

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GenreStrategySubgenreRTS

The best casual games like Summer Islands

5 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.

#1Plague 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

#2RollerCoaster Tycoon 2Closest on tone

iRank80

GenreStrategySubgenreRTS

SoloMultiplayerCasualSandbox WorldManagementIsometricPixel Art

Steam👍 90%· 5.8KIGDB60· 1

Year 2002Dev Chris Sawyer Productions · InfogramesOn PC

✓ Nearly identical: real-time strategy, deep simulation and sandbox freedom.

≠ Missing: procedural generation.

Where it drifts furthest from Summer Islands: game mode.

It predates Summer Islands by 23 years, with what that implies technically.

Genre100Tone100Progression100Visuals100World56Game mode44

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Steam

#3Mitos.is: The GameClosest on game mode

iRank56

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

#4DETOUR

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

GenreStrategySubgenreRTS

SoloMultiplayerCo-opCasualTactical

Steam👍 69%· 625MC69IGDB65· 2

Year 2013Dev ZachtronicsPlaytime ~3hOn PC · PS · Android

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

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

Ironclad Tactics is a fast-paced, card-based tactics game set in an alternate history Civil War - with steam-powered military robots!Key Features:Includes the 'Rise of Dmitry' and 'Blood and Ironclads' add-on campaigns! No microtransactions!

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

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

Genre100Tone100Game mode75

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