Paradox Interactive, the video game publisher behind the popular Cities: Skylines, has announced Surviving Mars, a simulation video game that tasks players with establishing the first human colonies on Mars.

Cities Skylines’ first expansion, After Dark, will be released on September 24th.

Paradox Interactive has announced the After Dark DLC for city-building sim Cities: Skylines.

Cities: Skylines, the city building game from Colossal Order, passed one million copies sold since March 10th, according to publisher Paradox Interactive.

Cities: Skylines racked up sales of 250,000 copies in its first 24 hours, making it the quickest selling title in Paradox Interactive’s catalogue.