Island SiegeIs Island Siege free?
Yes. The whole 100-wave campaign is free on the App Store. The game ships with no ads, no in-app purchases and no subscription — there is nothing to buy inside it.
Out now · iPhone & iPad
Hold the island.Break the siege.
This island was quiet once. Now the boats keep coming, and everything between the shoreline and your castle is whatever you had time to build.
The campaign
10 chapters · 100 waves · 25 bossesTen chapters of ten waves. A boss comes ashore every 4th wave — 25 of them across a full run, drawn from a roster of 20 different creatures — and the last chapter is where the story you have been ignoring finally catches up.
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Waves 1–10
Chapter I
2 bosses
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Waves 11–20
Chapter II
3 bosses
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Waves 21–30
Chapter III
2 bosses
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Waves 31–40
Chapter IV
3 bosses
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Waves 41–50
Chapter V
2 bosses
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Waves 51–60
Chapter VI
3 bosses
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Waves 61–70
Chapter VII
2 bosses
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Waves 71–80
Chapter VIII
3 bosses
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Waves 81–90
Chapter IX
2 bosses
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Waves 91–100
Chapter X
Finale · 3 bosses
Boss waves: 4, 8, 12, 16, 20, 24… every 4thSave & load at any point — no timers, no energy
Field manual
What you actually doThree jobs, in this order. Get the order wrong and chapter six will tell you about it.
Build
Raiders land on fixed paths. Everything you place is a decision about which path you are willing to lose.
- TrainBarracks for melee, archery ranges for reach
- HoldDefences along the lanes the boats favour
- FundGold, Wood and Meat — the economy has to outgrow the waves
Fight
The pressure is not a smooth ramp. It steps up hard on boss waves and again when a rival decides your island looks soft.
- BossesEvery 4 waves — 25 per run, 20 creatures
- RivalsAn ultimatum: pay tribute in Gold, or fight the landing
- Allies15 units ashore for 500 Gold + 500 Wood + 500 Meat
Survive
No daily login, no stamina bar, no server. The game is finished when you finish it.
- OfflineNever connects while you play
- PrivateNo account, no ads, no tracking
- YoursSaves stay on the device — and only there
Build the base that holds the lineGather wood, grow the army, and decide which shore you can afford to lose
Then watch it get testedTen chapters of raids, each one heavier than the last
Dispatches
Before you downloadDoes Island Siege work offline?
Completely. The game never talks to the internet while you play, so it runs the same on a plane or underground as it does at home.
Do I need an account?
No. There is no sign-in, no email and no account of any kind. Open the app and the island is already under attack.
How often do bosses appear?
A boss lands every 4 waves, so a full run is 25 boss fights drawn from a roster of 20 different creatures — not one at the end of each chapter.
What happens when a rival faction invades?
Mid-campaign a rival lands an ultimatum on you: pay their tribute in Gold and the squad never comes ashore at all, or refuse and fight the landing. The tribute goes up the more invasions you have already faced.
Can I call in reinforcements?
Yes, as often as your economy allows. Summoning brings a squad of 15 allied units ashore near your castle and costs 500 Gold, 500 Wood and 500 Meat together — so it is limited by what you have banked, not by a counter.
Is Island Siege on Android?
Not yet. It is iPhone and iPad only, and needs iOS 15.0 or later.
Can I move my save to another device?
No. Progress is written to the device you play on and never leaves it, which also means nobody — including us — can restore or transfer it.
The boats are already out.
Free on the App Store. No ads, no purchases, no connection needed — just the island and whatever is coming next.