Build a city on your private island! Grow your estate business, earn cash and expand your empire and become a real estate tycoon. Play our city construction building game. Free & Offline, no wifi needed.

Idle Island - City Building Tycoon stands out from other city builder games with idle tycoon simulator & clicker aproach to gameplay. Build houses, stores, expand yout territory, buy cars and invite citizens - the fate of your town is in your hands, Mayor.

Become an industrial city builder tycoon by managing your city building company and your idle profit!
Expand your business, build empire, take on the challenge and discover the best strategy and earn as much cash as possible!

Build houses, stores, bank, factories, and much more! Boost your population.

Build a house for your citizens, build factories to increase your income, construct various towns on your private island. Make smart choices to keep your citizens happy and your real estate empire growing.

This is one of the most addictive simulation game there. Use the best strategy to grow your city building company!

- Easy to play city building sim
- Build beautiful towns
- Fun FREE to play idle tycoon game
- Intuitive gameplay with challenging tasks, quests, rewards and achievements
- Tap tap idling mechanics
- Get idle cash, even when you are offline
- Prestige feature
- Manage up to 10 cities
- No internet connection needed
- AR mode - play on the table

Grow your building construction empire, manage your company, grow yourself from an ordinary businessman to a giant real state tycoon. Become the best business tycoon.

Do you want to build a city, on your private island? What you are waiting for? Download Idle Island - City Building Tycoon now! Free & Offline, no wifi needed.

What’s New

Version 1.00.05

Minor bug fixes.

Ratings and Reviews

4.7 out of 5
23.5K Ratings

23.5K Ratings

Elliot and Sophie ,

This Game Is Fun But........

This game is sooo fun I can’t doubt it. But after a while this game gets really boring. It gets really boring when you have everything built in your city but you have to wait until you have enough money to unlock the other cities. There are also sooo many pop up adds for such a small game. The money that you have to have in order to unlock new cities is SO tremendously high that’s it’s crazy. For the next city after Newton (which is your first city in the game) you have to have 3.5 million dollars in order to unlock the next city. In my opinion that’s a tremendous amount of money for a beginner to gain. Also after you get every single city in the game and build everything in the cities the app is no longer useful. It gets boring, and it becomes just a game that takes up space in your phone. In my opinion, this is a GREAT game, but after all the cities and buildings are built the game is no longer useful. Thank you developers for putting so much work in this game, but please put something else that will let players have more things to do. Thank you!

hi plz see this ,

I Love it

Ok all I want to say is that this game is super fun but all I want to say is that I don’t really like the fact that it is kind of hard to be able to get a new world but I have had for a few months now but it just a little hard for me but other than that it’s super fun to play and it is great if you are bored or when on a road trip or just in a store when your mom sees her friend and talks forever but I still love the game and I just well I would recommend getting this game bc I but that if you have younger siblings or something I can tell you that this is a nice way to keep them occupied and well ya but as I said I recommend you get this game it’s super fun 😄😄😄😊😊😁😁

MousesFoDays ,

So far average

Most of the games I play are idle games and this one is nothing special to write home about. Although I’ve only been playing for less than 20 mins (the game was just released) and it’s the type that seems where you progress to a new area rather than starting completely over but with a buff. I would recommend this game to newer idle game players, and there are not really any ads as far as I’ve seen. My only complaint is the constant “wows” and “hmmms” that happen when you are tapping for more people, it’s kinda annoying and I haven’t found a way to turn off sound while keeping music on, which is my favorite part idle games. Other than that yea the game is great so far good job to the developers for a newly released idle game to be this advanced.


Robert Grzybek
160.6 MB

Requires iOS 9.0 or later. Compatible with iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6S, iPhone 6S Plus, iPhone SE, iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, iPhone XS, iPhone XS Max, iPhone XR, iPad Air, iPad Air Wi-Fi + Cellular, iPad mini 2, iPad mini 2 Wi-Fi + Cellular, iPad Air 2, iPad Air 2 Wi-Fi + Cellular, iPad mini 3, iPad mini 3 Wi-Fi + Cellular, iPad mini 4, iPad mini 4 Wi-Fi + Cellular, 12.9-inch iPad Pro, 12.9-inch iPad Pro Wi-Fi + Cellular, iPad Pro (9.7‑inch), iPad Pro (9.7-inch) Wi‑Fi + Cellular, iPad (5th generation), iPad (5th generation) Wi‑Fi + Cellular, iPad Pro (12.9‑inch) (2nd generation), iPad Pro (12.9‑inch) (2nd generation) Wi‑Fi + Cellular, iPad Pro (10.5‑inch), iPad Pro (10.5-inch) Wi‑Fi + Cellular, iPad (6th generation), iPad Wi-Fi + Cellular (6th generation), iPad Pro (11-inch), iPad Pro (11-inch) Wi-Fi + Cellular, iPad Pro (12.9-inch), iPad Pro (12.9-inch) Wi‑Fi + Cellular, iPad mini (5th generation), iPad mini (5th generation) Wi-Fi + Cellular, iPad Air (3rd generation), iPad Air (3rd generation) Wi-Fi + Cellular, iPod touch (6th generation), and iPod touch (7th generation).


English, Polish

Age Rating
Rated 4+
© Robert Grzybek RSG
In-App Purchases
  1. Starter Pack $1.99
  2. 2x Offline $7.99
  3. Diamonds Pack I $1.99


  • Game Center

    Challenge friends and check leaderboards and achievements.

  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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