Terraformers: Megastructures

In this Terraformers' DLC you can build a megastructure in every Martian city. Will you construct a self-sufficient Arcology, a facility to completely control a city's local climate zone, or a space elevator to vastly increase your trading capacity?

Develop - Decide which megastructure designs your architects should pursue. There are 10 unique megastructures that can be researched.
Build - Upgrade your megastructures multiple times, with each new stage offering unique benefits but requiring a larger city population.
Optimize - Integrate your megastructure into the city and make it synergize with previously constructed buildings.
Events - Make technical innovations to enhance your construction capabilities with 3 new events.
Leaders - Reshape your Martian society into a construction-centered one with 3 new leaders.
Projects - Focus on architectural innovation and resource efficiency with 5 new city buildings and 1 new technology.
Scenario - Take on the challenge of a new longer scenario.
Music - Accomplish all of this while listening to a new music track.