There are all deviations from the official wallpapers on ArenaNet's site. In fact, currently they're all deviations of the hires Mesmer wallpapers, although the second one includes graphics from the hires warrior wallpapers.
 |
| Cosmic Mesmer [1600x1200] |
I hate the hires warrior they've been using for their latest wallpapers, so I just had to do this one...
 |
| Mesmer Pwns Warrior [1600x1200] |