In Cities: Skylines II, players embark on a dynamic journey of urban development governed by a system of Milestones and Expansion Points (XP). This system is key to unlocking new features and enhancing the growth of your city.

Overview of Milestone Progression

As you engage in various city-building activities—such as constructing roads, setting up resource generators, establishing essential services, and ensuring high levels of citizen satisfaction—you earn Expansion Points. These points accumulate to help you reach 20 distinct Milestones grouped into five stages:

1. Village
2. Town
3. City
4. Metropolis
5. Megalopolis

Each stage not only reflects the growth level of your city but also grants access to new buildings, services, loan limits, development points, and expansion permits essential for further city development.

Process of Unlocking Milestones and Development Points

To successfully navigate through the Milestones, follow these key steps:

1. Accumulate Expansion Points: Focus on both active methods (like building and upgrading infrastructure) and passive methods (such as population growth and maintaining citizen happiness).

2. Reach a New Milestone: Successfully gaining enough XP will allow you to unlock a Milestone, revealing new basic services and buildings that are critical to further city growth.

3. Utilize Development Points: Upon reaching a Milestone, you earn Development Points. These points can be allocated in the Development Tree, where you can unlock more advanced and unique features tailored to the specific needs of your city. For instance, this may include unlocking wastewater treatment facilities, developing harbors, or creating parks for recreation.

4. Expand City Zoning and Unique Features: As you progress through the Milestones and utilize your Development Points, you unlock new zoning capabilities (like higher density areas) and unique buildings. This step significantly enhances the variety and capability of your city’s infrastructure.

Strategy for Effective Progression

To optimize your growth and effectively unlock new Milestones and features, ensure that your city’s development is balanced with citizen satisfaction. This dual focus will not only provide you with the necessary Expansion Points but will also create a thriving environment that encourages further growth and exploration of the Development Tree.

By maintaining a committed approach to both infrastructure development and citizen happiness, you’ll find yourself steadily unlocking new Milestones and further enriching your city with advanced services, structures, and capabilities crucial to building a successful urban environment in Cities: Skylines II.