They're just links to files on dropbox. Shouldn't be any trouble in opening them up, no-one else has had any trouble. However, they're background files on the subjects mentioned, as the background is a big part of the game.

Essentially, to try and distill it down a little - The player characters are all part of a race of anthropomorphic animals on a planet named Arvara. They live in a pre-constructed society, which is hi-tech and civilized. The 'pre-constructed' part is apparent, as they gained awareness around 250-some years ago that they had been living a 'routine' life, without questioning. 
This awareness shook their society, and lead to the forming of nations and groups, and has lead to a state of near-war between the various groups, as they have different ideas on how to run their society, and who their Creators might be. 

Some of their high-technology is in the shape of formidable robot vehicles, practical because of their level of technology, and the unique geography of their world, that involves strong magnetic fields that prevent aircraft from being a dominating battlefield presence (you can see examples of the mecha on peoples' sheets).

The current situation is that there are two large power blocs, the oppressive, fascistic Northern Empire, whose self-declared Royal Family use disinformation and propaganda to whip their population up into dedicated xenophobic frenzy, and the mysteriously isolationist and aloof Southern Alliance, who close their borders to outsiders, but still seem to be spying on everyone and pulling strings.
In between are the far more moderate and varied Independent States. Landren is the biggest one, and (probably) one of the most liberal and moderate. The PC's are a newly-formed experimental combat GEAR squadron of the Landren Defence Forces - LDF - and will end up getting involved in something that starts out as a routine op, but ends up being vital to the survival and outcome of the whole Arvaran species, and answers a lot of questions.

In short, you get to play a fuzzy animal person who pilots a kick-ass robot. Your character will need to be well-rounded, as it's not just about playing a furry. It's not especially cute, it has a plot with some serious questions and implications, and there will be quiet drama moments as well as things exploding a lot.