
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.
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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!
Genres
Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Languages: German*, English*, Spanish - Spain*, French, Italian, Arabic, Portuguese - Brazil, Traditional Chinese, Simplified Chinese, Japanese, Korean, Polish +4 more
Engagement
Hours played at review time, across 40 reviews with recorded playtime.
Reviews
Themes across 40 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
positive critical· bar length = how often the theme comes up
Reviews
hm, game is okeyish, but somehow it doesn't cling with me. Also another thing that holds me back are the AI generated answers the Dev is giving to the people. Be it in the forum or here in the reviews. That shows me the "effort" they give for actually adressing the player. Shame really. I wonder how much AI is there in other areas as well.
Wer wie ich ein Kind der 90er ist und damals schon einen PC hatte, da war die Spielauswahl begrenzt. Ein Spiel was mir die letzten 25 Jahre in Erinnerung geblieben ist und mich sehr viele Stunden in meiner Jugend begleitet hat ist Holiday Island. Ein tolles Spiel und die letzten Jahre habe ich immer danach gesucht und es nur auf CD-Rom gefunden. Leider sind die heutigen PC´s meist nicht mehr mit einem CD Laufwerk ausgerüstet, so auch meiner nicht und sich ein externes holen, wegen einem Spiel, was vielleicht auf den heutigen Systemen gar nicht mehr läuft... nein. Durch Zufall bin ich jetzt über Summer Island gestolpert und dachte schon anhand der Vorschaubilder...mensch das kommt mir doch bekannt vor...das wird doch nicht....! Ohhhh doch, das ist es ein absolut würdiger Nachfolger für das einstige Holiday Island, man hat direkt die 90er Vibes, die Bedienung ist nahezu die selbe. Es macht einfach wieder irre Spaß! Als einzigstes Manko sehe ich, dass man nicht einstellen kann, das man unendlich Geld hat, das sollte dringend eingebaut werden. Oder eben einen Sandbox Modus, damit man einfach wild drauf los bauen kann. Sich wieder rein fuchsen kann und dann auch die Kampanien besser übersteht, denn das macht mir grade noch sehr Probleme. Nichts dasto trotz, absolute Kaufempfehlung von mir. :) eure Mrs.Dolittle.Gaming (Tiktok)
Kenne es noch als Holiday Islands Da werden wieder Erinnerungen wach, als die Spiele noch unter DOS gelaufen sind und man stolz auf seine 40MB Festplatte war und den 486er. Die autoexec.bat und config.sys bearbeitet hat. Schlicht und einfach, ohne diesen Grafik Hype waren die Spiele damals, hatten dafür aber noch Herz und eine Seele.
The game is a nice throwback to holiday island and the developers did their best to improve on that game with the advanced land leveling tools and the added complexity of the clusters. The cluster system takes some time getting used to because it's split between luxery and mass tourism and sometimes a bit counter intuitive. For example hotels like the proximity of car rentals? However the game has a huge performance problem. As you pass the 5000-6000 tourists, it's starting to lag terribly to the point of becoming unplayable. I don't care much for frame rates but it's getting hard to move the mouse and the simulation is slowing down, making it take forever to build new things. This is inexcusable. The game isn't simulating agents, it's not taking into account inflation or complicated economics, there are no 3d graphics... what is it even processing? Holiday island could handle more than 6000 tourists and it ran on a 60MHz CPU with 2MB of RAM! (granted it took some time to do the year end accounting) This game, considering it's graphics and dept of simulation, should be able to run fluently with millions of tourists on any hardware. It seems to be some kind of build up and the developer have pointed out that saving and reloading the game resets the lag and this indeed works for about an hour.
nostalgia at its finest
game crashes every 30-45 minutes when playing multiplayer. other than that, it is a solid game and very nostalgic of 2000s styled city builder games. had a blast with my wife when the game did work, keep it up devs.
I do like this game but the performance is so bad that it ruins my fun in hunting the achievements i have 100k tourists and it´s just unplayable.
Summer Islands is a fun holiday island business simulation game that offers lots of room for creativity. The game can be best described as city-builder x business hybrid, but it definitely leans more towards the business sim end of the spectrum. You do have utilities and transportation facilities, but the vast majority of the content is built around developing a holiday resort. I do wish the city-builder side was explored just a bit more. For example some generic residential buildings to provide for all the employees on the island. I personally love the graphics, but I am biased since I started gaming in the 90s. I never played Holiday Island, the inspiration for this game, but as a fan of business sims (and city-builders) the gameplay was very engaging.
Summer Island ist genau das, was ich mir gewünscht habe: eine liebevolle Neuinterpretation von Holiday Island. Man merkt sofort, dass das Spiel mit Absicht so gestaltet wurde, die Mechaniken, der Stil und die Atmosphäre sind eine Hommage an das Original. Die Detailtreue ist beeindruckend, und obwohl ich immer noch genauso schlecht darin bin wie früher, macht es riesigen Spaß! Für alle Fans von klassischen Wirtschaftssimulationen und Nostalgie: Kaufen lohnt sich absolut!
Summer Islands is a warm, methodical resort-building game that channels the spirit of classic tycoon titles while layering in modern sandbox flexibility. Developed and published by Marttalin Games, it invites players to transform humble tropical atolls into bustling holiday destinations through careful planning, economic foresight, and a steady eye on the needs of tourists. From the first moments, the game communicates its priorities clearly: growth is earned through smart infrastructure, thoughtful zoning, and a willingness to adapt when paradise doesn’t quite go according to plan. The core loop revolves around balancing attraction and sustainability. You place beaches, hotels, restaurants, utilities, and transport links to entice visitors while keeping operating costs under control. Coverage areas and proximity matter, nudging players to think in systems rather than isolated buildings. Early decisions feel consequential—choosing where to develop first, how much to spend on terraforming, and which amenities to prioritize can define the pace of the entire run. As tourists arrive, revenue begins to flow, but the game resists becoming a passive money printer; maintenance, upgrades, and unexpected events like tropical storms ensure that expansion always carries risk alongside reward. A defining strength of Summer Islands is its nostalgic presentation. The isometric, pixel-forward art style recalls early city builders and resort sims, delivering clarity and charm without sacrificing readability at scale. The visual language makes it easy to parse density, coverage, and traffic, which is essential as islands grow complex. Animations are modest but effective, and the aesthetic keeps performance smooth even as maps fill with activity. This retro sensibility pairs well with the game’s calm pacing, making long planning sessions feel inviting rather than overwhelming. Depth emerges through layered economics and progression. Early play is about survival—finding flat land to save costs, establishing utilities, and ensuring tourists can move efficiently between attractions. Over time, unlocks broaden your toolkit, allowing more specialized buildings and ambitious layouts. The arc from scrappy beginnings to a thriving resort empire is satisfying, though players seeking relentless pressure may find the mid-to-late game gentler once revenue stabilizes. For many, that easing of tension is a feature rather than a flaw, transforming the experience into a creative sandbox where optimization gives way to expression. Procedural generation adds significant replayability. Islands can be small and focused or sprawling archipelagos with varied terrain, encouraging different strategies from run to run. Sandbox options let players tailor difficulty and scope, while a campaign mode provides structured goals for those who prefer guided challenges. Community features, including Workshop support, extend longevity by enabling custom maps and scenarios, and cooperative multiplayer allows friends to collaborate on shared builds—splitting responsibilities and decisions in a way that feels natural for a management sim. The interface and tooling are functional, if occasionally rough around the edges. Some menus feel utilitarian rather than elegant, and there can be moments where information density asks for an extra click or two. These hiccups rarely derail play, and frequent updates and visible developer engagement have steadily improved polish. Importantly, the game communicates its systems clearly enough that experimentation is encouraged; when something doesn’t work, the reasons are usually understandable, making iteration part of the fun. Atmospherically, Summer Islands strikes a pleasant balance between relaxed and purposeful. The soundtrack and ambient cues support long sessions without demanding attention, while visual feedback—busy beaches, flowing traffic, steady income—reinforces progress. Disasters and downturns punctuate this calm, reminding players that even paradise requires planning and contingency, but the tone never turns punitive. In sum, Summer Islands succeeds by respecting the fundamentals of classic resort sims while offering modern flexibility and community-driven longevity. It may not chase spectacle or hyper-complex micromanagement, but it excels at delivering a thoughtful, rewarding build-and-grow experience where every island tells a slightly different story. For fans of management games who value clarity, creative freedom, and the slow satisfaction of watching a plan come together, it’s an inviting return to a genre that thrives on patience and imagination. Rating: 7/10
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Momentum
Pace estimated from the game's recent review growth (our daily snapshots) at its own sales-per-review ratio — a momentum signal, not booked sales.
Audience
Estimated from the language of this game's reviews — a proxy for where players are, not official Steam demographics.
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