The wallpapers below are all in dual-screen format (for 2 monitors) and available in the members section at a maximum resolution of 5120x1600. FAQ & example:

World of Warcraft: Mists of Pandaria dual screen wallpaper or background
Trine 2 dual screen wallpaper or background

Trine 2

Wallpapers: 9

Trine 2 dual screen wallpaper or background

Trine 2

Wallpapers: 9

Transformers: Fall of Cybertron dual screen wallpaper or background
The Lord of the Rings: War in the North dual screen wallpaper or background
Mass Effect 3 dual screen wallpaper or background

Mass Effect 3

Wallpapers: 10

Killzone: Shadow Fall dual screen wallpaper or background

Killzone: Shadow Fall

Wallpapers: 9

Battlefield 3 dual screen wallpaper or background

Battlefield 3

Wallpapers: 8

Saints Row: The Third dual screen wallpaper or background

Saints Row: The Third

Wallpapers: 6

Star Wars: The Old Republic dual screen wallpaper or background
Fallout 3 dual screen wallpaper or background

Fallout 3

Wallpapers: 8

Fallout 3 dual screen wallpaper or background

Fallout 3

Wallpapers: 8

Clive Barker's Jericho dual screen wallpaper or background

Clive Barker's Jericho

Wallpapers: 5

Space Invaders Extreme dual screen wallpaper or background

Space Invaders Extreme

Wallpapers: 1

Hellgate: London dual screen wallpaper or background

Hellgate: London

Wallpapers: 22

Mirror's Edge dual screen wallpaper or background

Mirror's Edge

Wallpapers: 10

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