Flag of the Star League in the IOT spin-off Imperium Universalis. Certainly not one of my more inspired designs, although I do like the aesthetic.
The Star League is an autonomous military order that functions as a sort-of space-based UN, comprising a vast multitude of races and species from across the galaxy. It derives from an unfinished space opera I started God-knows-how-long-ago, and is one of two major factions competing for universal supremacy. While apolitical and authoritarian in structure, it is nonetheless the "good" counterpart to the similarly-organized, but dictatorial and human-centric Third Hierarchy of United Systems. Both factions trace their origins to a war on Earth in the late 1990s, and their contemporary leaders hold a personal vendetta. Very little of this history was elaborated in-game on account of even though the thread ran for three months, it was ridiculously slow to develop.
As with the Bundesleet in Mobius: Total Chaos, this flag was created for the purpose of the game and no symbolism existed prior. Given its colour scheme, I might re-use this in DYOS if the Eastern Union ever develops spaceships.
UPDATE 3-9-22: Downloadable vector available in the SVG Legacy Flag Pack!
[Originally submitted to DeviantArt February 2012.]
Sooo... No defending the Frontier against Xur and the Ko-dan armada?
Nice design.