Planetary Colonization Imagine Earth is a real-time planet simulation and a build up strategy game. Your job as a space colony manager is to explore and populate distant planets. Build up thriving and profitable colonies on a global scale and trade resources and goods into space. Deal with allies, threats and enemies.
Assimilator Drone
This first point is partly a spoiler. So jump right over it, if you haven't played the Bora mission yet.
As you know the Bora mission introduces a threat that is kind of an end boss for the campaign. This "Assimilator" (previously "Electronic Employee") spreads its cables from field to field to reach your City Center in order to assimilate it.
The assimilator now comes with a floating drone monstrosity that increases it's territory field by field. You can use frontier towers with laser or pulse cannons to defend against it.
Be careful though - the assimilator drone will fight back with a small laser cannon and thus might destroy your defense. And your cannons will only allow you to stop the assimilator from expanding. Meanwhile costing money and your precious attention.
There are several ways to get rid of it. Use asteroid strikes or volcano eruptions. Or expand your territory and apply explosive devices or an ideon bomb.