Post-apocalyptic science fiction describes situations in which our ability to predict and control fails catastrophically. Nature escapes our control, through world-wide plagues, collisions with asteroids, or invasions by alien species; or else we're done in by our own efforts at control, by nuclear war or human-induced ecological catastrophe.
Downfall by alexiuss

City Ruins by Natiq Aghayev

Ashes by Philip Straub

Insidious Discrepancy by alexiuss

Adamant Citadel by alexiuss

Inherited Hell by alexiuss

POST-APOCALYPSE by I-NetGraFX

Rusty future by eWKn

In the mists of Vegas by eWKn

Biker base by PeteAmachree

Exiled to Earth by Rahll

The Core by d3fect

Post-apocalyptic Landscape by David Levy

Apocalypto by 88grzes

Fallen by Sandeep Karunakaran

Apocalypse by Pablo Vicentin

2nd concept envi by p0p5

Remains by Phoenix-06

War Dust by Ahmed Hosny

28 days later by Benoit Ladouceur

The Law 2102 by eWKn

In Sight of Apocalypse by Daniel Conway

Crazy Mechanic by Pene Menn

Her Silent Silhouette by Daniel Conway