So I just discovered Eclipse Phase (my first game is on Thursday) and my tradition with new games is to redesign all of the included logos/flags plus add more of them. I've done a few, but first I'd like to share the sort of Big Factions, which are most of the logos that the books include, but also a few more.
These are all in flag form, I will include the "logo form" whenever I do a post focusing on that particular faction (of which I have a few planned)
THE PLANETARY CONSORTIUM
More or less the same as the in-game image, but cleaned up a bit.
THE LUNAR-LAGRANGE ALLIANCE
Similar to the in game image, but cleaner. In my head the symbolism is white for the Lunar-Lagrange being the "guiding light" of transhumanity, the dark blue is space, and the blue shadow behind Luna is the shadow of the Earth that hangs over the LLA.
THE MORNINGSTAR CONSTELLATION
The astrological symbol of Venus superimposed over the Star of Ishtar, like the book's version. I made the flag square to symbolism the Constellation as sort of being space Switzerland, the most progressive of the inner system capitalist states. Pink was added because I wanted there to be pink somewhere.
THE THARSIS LEAGUE
Same symbolism as the in-game, a seven pointed star over Olympus Mons, with the orange sky of Mars. I would love to know why seven points, one for each letter in Tharsis?
THE BARSOOMIAN MOVEMENT
My own design. The red is rustier than the Tharsis flag deliberately. The green represents the ability to self-determine on the terraforming question, and also as a sly nod to the classic skin-color of Martians.
THE AUTONOMIST ALLIANCE
This one came about by me not liking that the AA's logo in the book was red and black, which I can't imagine Extropia would ever agree to. Thus the classic anarchist bicolor is made grey symbolizing little, and there are two A's instead of one.
Black and gold for anarcho-capitalism, with the black star of anarchism and an upwards arrow for the principles of Extropia's reaching for a better transhumanity (thought ancapism).
The emblem of Locus on the black flag, at least as much as Locus may agree to have an emblem. It's the amoeba, and its purple because I wanted it to be (and because the amoeba is purple, at least sometimes). I imagine in universe the emblem is used more informally to represent the station and communal anarchists.
THE JOVIAN REPUBLIC
The book's logo flagified. I imagine the red represents the blood of huamnity, the white purity, the blue bioconservatism, and the grey unity (or something). Grey is not actually a common flag color.
I actually posted this on the vexillology reddit. Its Europa in front of Jupiter. The blue represents the sea, and the white crescent turned upwards suggests the white bull that spirited Europa away. This flag's proportions are the golden ratio, because I love Europa.
THE TITANIAN COMMONWEALTH
And last but not least, the Commonwealth. The flag is a Nordic Cross with Saturn and Titan. The Cross reflects the Scandinavian influence on the Commonwealth's population and politics, and the flag is taken from the colors of the Nordic countries as well.