Flag of Mars Deimos, and the light blue crescent might allude to the limited amount of water and breathable air present on Mars that is necessary for human life. Flag of Mars A flag of Mars is a flag or flag design that represents the planet Mars or that represents a fictional Martian government. Science fiction authors have, for literary purposes, described the flags of fictional Martian governments. Some of the readers of those flag descriptions have created flags or flag images that are based on the authors’ descriptions. Flag images for two fictional Martian governments are presented in this article. Advocates of
Terraforming of Mars have risen high enough for seas and rivers to form. The 1993 space trading and combat game "", as well as its sequels "" (1995) and "Elite Dangerous" (2014), feature a terraformed Mars. The 1997 PC Real-time strategy game "Dark Colony" is based on a human-terraformed Mars, featuring a war between the colonizing humans and invading aliens of various life forms, with much use of biological warfare. The aliens try to colonize the terraformed planet for its resources. The 2009 video game "" is set on a partially terraformed Mars, in which human beings are able to walk and breathe