Summer Islands

Summer Islands

Released Jan 2025

Summer Islands is a holiday real-time strategy business simulator. Be the right businessman, build your holiday paradise and grab the money from your tourists. Play alone, with your friends and with computer enemies and survive natural disasters without going insolvent.

81% positive · 196 reviews
Not yet
Released, but content still planned
High confidence
Content Planned
Not yet
Released, but content still planned
High confidence
Content Planned

Where to buy

Steam $14.99
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Evaluation

Summer Islands launched at version 1.0.0 on January 25, 2025 after over five years of development. Since launch, Marttalin Games has delivered a steady stream of updates: Campaign Part 2 with five new levels (March 28, 2025), a major seasonal content update (v1.0.3, January 17, 2026) adding cherry blossoms, maple leaves, snowflakes, a Japanese special building, accessibility options, and more, plus bug fix and feature patches including Update 1.0.5 on June 1, 2026. Most recently, on August 14, 2026 — just 13 days before today — the developer posted a studio-wide update explicitly confirming that a larger content update for Summer Islands is still planned. They state the new content is "closely connected to one of our new games" and that they don't want to reveal details until that game is released. They also plan to reintroduce the tutorial level, add more campaign levels, and add a direct feedback button. A near-term bug-fix update is also coming within the next month. The developer is active, communicative, and has directly stated that future content is coming for Summer Islands.
Evidence
Developer confirms a larger content update is still planned for Summer Islands, connected to one of their upcoming games. Also plans to add more campaign levels, reintroduce the tutorial, and ship a near-term bug-fix update.
news post · Aug 14, 2026 source content planned
high
Update 1.0.5 ships bug fixes and adds Swedish language support. Post notes 'a larger update is already in the works.'
news post · Jun 1, 2026 source content planned
high

Media

Details

Publisher
Marttalin Games
Achievements
38
Platform
Windows, Linux
Controller
full support
Steam Deck
Verified
Players
Single-player · Multiplayer · Co-op · PvP

About this game

Create almost infinite numbers of maps with different seeds. One island, several or the Summer Islands mode. From small 100x100 maps up to 1500x1500 maps. From high mountains or just sand islands. Everybody finds his small island in the wide ocean or in the big archipelagos.

Build cabins, villas or expensive hotels directly on the beach or in the mountains. When a building is finished, tourists can come by boat or plane. The tourists want to be preserved. Build bars, discos, golf courses, supermarkets and many other buildings that are popular with tourists and will make you rich as the owner.

Buy new buildings from a wide range of building types. From houses and hotels to restaurants, stores, parks attractions etc. Here you can distinguish between mass tourists and luxury tourists. Buildings with luxury tourists earn you more money, but are expensive and have a lower capacity. Also note that mass tourists and luxury tourists have different preferences as to which buildings are nearby.

Borrow money or pay off your debts. Go out and advertise, or take out insurance. Check if your buildings are doing well and you can raise the rent. Hire consultants to protect you from sabotage, for example. Or would you rather unlock more sabotage? That is entirely up to you.

Unfortunately there are also natural disasters that can destroy your buildings. Whether tornado, earthquake or meteorite, everything is possible.

In quiet times the competition comes from your enemy and expands over your land. Maybe there are some sabotage possibilities!

In the Map Editor you can not only create your perfect map. You can also fill it with events. Which buildings should be unlocked under which conditions. A match where you cannot build roads or there is no minimap? You want natural disasters to occur under certain conditions at a certain place? Try it out!

Last evaluated Aug 27, 2026
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