Cities Skylines features a milestone progression system. Each time you reach a certain population milestone additional gameplay and related buildings, overlay and settings become available. Checkout this guide for an overview table of all milestones! I will also do my best to pass judgement on all unlocks.
Cities Skylines offers different methods to produce electricity. The further you progress the more you unlock! You can construct water based Wind Turbine's, Oil power plants, Solar Power plants and even Nuclear Power plants. How do these work and which should you choose to power your city?
Cities Skylines is an interesting game that is pretty accessible compared to some of its competitors. However there are a few things that might not be immediately clear or that can even allow you city to perish in a few minutes.