District Null

One of your cities reached 50,000 residents.

You built a University.

One of your cities reached 1,000,000 residents.

You fought off the Slime Men.

You fought off the Pterosaurs.

You built a Research Lab.

Your Research Lab reached level 3.

You unlocked 10 new areas in one city.

One of your cities reached 10,000 residents.

Your Research Lab reached level 2.

One of your cities reached 500,000 residents.

One of your cities reached 100,000 residents.

One of your cities reached 25,000 residents.

You unlocked a new area.

You fought off an attack by enemy ships.

You built a Fleet Base.

You unlocked 3 new areas in one city.

One of your cities reached 5,000 residents.

You unlocked 5 new areas in one city.

You built a Particle Shield.

You unlocked 20 new areas in one city.

One of your cities reached 200,000 residents.

You fought off the Giant Worm.