|Mass Effect 3|
Population (Orbital Stations): 223,500
When searching for a colony to retire to, Alliance hero Jon Grissom said he wanted "the one where the sun has the decency to set at a reasonable time." Elysium fulfilled this criteria and many more, featuring low gravity, tolerable atmospheric pressure, and a suitable climate. Humans and aliens alike flocked to the "alpine paradise" early in its colonial years, and the planet remains a vibrant hub for both visitors and permanent residents.
Security is a constant concern for Elysium; the planet has suffered several pirate or mercenary attacks, including the Skyllian Blitz of 2176. Elysium's airspace is secured by mobile planetary defense cannons--its armed starship complement is relatively light. Materiel and volunteers from Elysium formed part of the Alliance Second Fleet, which was stationed near Arcturus before the fleet was destroyed by the Reapers.