Good idle tycoon
Great game very addictive
Great game
Cool premise and satisfying to play
Good
Hh
Meh
Won’t even let me open the game says I have no connection, yes I’ve deleted it and reinstalled it
Cool
Cool

Develop a small town into a futuristic metropolis by building and upgrading amenities, optimizing visitor flow, and attracting new guests through marketing. This calm, decision-driven game lets you design your dream city with stylized 3D graphics and animations.
Summarized from real user reviews of Diamond City. Based on 829 reviews and a 4.5/5 average, it highlights the 4 positives and 4 negatives reviewers mention most about this game.
0.0.24
March 18, 2026
• Fixed some technical and functional bugs
$1.99
Hard pack 150
150 hard currency units
4 issues
Prestige button not working
Missing features (e.g. casino)
3 requests
Offline earnings
Less intrusive ads
This game allows you to transform a small town into a large, futuristic city. You will be responsible for developing the transportation system, building and upgrading amenities, and designing marketing campaigns to attract visitors and increase income.
Key features include creating a futuristic city with unique amenities, making important development decisions, completing an extensive list of tasks, enjoying stylized 3D graphics, and seeing awesome animations for each building level.
The game is free to download and play, but it does offer in-app purchases. It also includes advertisements.
This game is ideal for players who enjoy calm and not overly stressful games. It appeals to those who like making big decisions and building their own dream city.
You can attract more visitors by designing effective marketing campaigns. The more visitors you attract, the more income your city will generate, allowing for further development and upgrades.