CITY BUILDER

Getting Started

BuildCity is a free browser-based 3D city-building idle simulation game. No download or installation is required — simply create an account and start playing directly in your web browser. As mayor, your goal is to grow a thriving city by constructing public facilities, attracting citizens, and collecting taxes. Even when you're offline, your city continues to generate income.

Building Your Infrastructure

Every city needs three essential utilities before citizens will move in: electricity, water supply, and road access. Start by placing a power plant to provide electricity, then build a water intake and sewage treatment facility. Once these are operational, connect them to your residential zones with roads. Citizens will automatically begin settling on connected, powered, and water-supplied plots.

City Services & Happiness

To keep your citizens happy and attract more residents, build essential city services within their coverage range. Fire stations prevent fire damage, police stations reduce crime, hospitals keep residents healthy, schools improve education, and parks boost overall happiness. Each facility covers a specific radius — plan your city layout to maximize coverage and minimize service gaps.

Economy & Tax Collection

Citizens pay taxes based on the land value of their neighborhood. Higher land values — boosted by nearby parks, good services, and dense development — generate more tax revenue per citizen. Log in daily to collect your accumulated taxes. Manage your budget wisely: a positive balance lets you build more facilities, while depleted funds will halt construction. Commercial and industrial zones provide additional income and employment for your residents.

Industry, Resources & Trade

Advanced players can unlock industrial buildings that extract raw materials such as oil, coal, and ore. These resources can be refined into higher-value products and exported for significant profit. Managing an industrial supply chain adds a strategic layer to city planning — balance residential comfort against industrial output to maintain a high quality of life while maximizing revenue.

Tips for Growing Your City

• Build services before zoning residential areas to ensure full coverage from day one.
• Parks placed near high-density housing dramatically increase land value and tax income.
• Visit other mayors' cities to learn new layout strategies and earn bonus rewards.
• Check in daily — idle income accumulates up to a cap, so regular visits maximize earnings.
• Upgrade your power plant and water systems before expanding to avoid utility shortages.