Inter-planetary war
Have a look at this ET wallpaper we have on display! There’s an alien heavy gunner armed with what appears to be a pistol, and another alien carrying what looks like a machine gun. Perhaps it’s a rank higher? The pistol-wielding alien does have some human-like features, in contrast.
The heavy gunner looks like an alien from Futurama. The look on the higher-rank alien’s face tells that something in the lines of the jig is up. Is it walking into a trap? Is it being betrayed? Only the rest of the wallpaper knows!