Post-Apocalyptic

Mushroom 11

Mushroom 11 is a side-scrolling puzzle game in which you must guide an amorphous organism across obstacles. The player controls the fungus-like blob by clicking and holding and then pointing in certain directions to guide the liquid-like substance in a certain direction. Rather than moving the organism, the player actually removes parts of the organism that then regrow as new cells at the other end of the organism in the specified direction.

The Old City: Leviathan

From Steam:

The Old City: Leviathan is an experiment in first person exploration that focuses entirely on story. All that exists is you and the world. Set in a decaying city from a civilization long past, The Old City: Leviathan puts the player in the shoes of a sewer dwelling isolationist.

Tom Clancy's The Division

Tom Clancy’s The Division is a ground-breaking RPG experience that brings the genre into a modern military setting for the first time. In the wake of a devastating pandemic that sweeps through New York City, basic services fail one by one, and without access to food or water, the city quickly descends into chaos. As an agent of The Division, you’ll specialize, modify, and level up your gear, weapons, and skills to take back New York on your own terms.

Underrail

No map or fast travel in this isometric RPG with turned-based combat. Underrail values exploration so much that the default progression system relies solely on finding special items (called oddities) instead of piling up experience points for every critter killed or quest completed. The game is not shy on dialog and characterization, but its heart beats for combat, crafting and the endless possibilities of stealth, brute force, traps or psychic warfare in a subterranean wasteland rife with loot and danger.

Wild Metal Country

Post-apocalyptic vehicle action game by DMA Design (now called Rockstar North).

Dirty Bomb

Dirty Bomb takes first person shooters back to their purest roots in a fast-paced team game that will challenge even the most competent players. This game won’t hold your hand, in fact it is more likely to kick your teeth in. With no controller support or aim assist, all that lies between you and certain death is player skill and reaction. Work together or die alone in the most challenging team-based FPS.

Mad Max

The game reboot of the movie reboot. In a world that knows neither mercy nor windshield, a lost man fights to survive the madness and leave it behind in a plume of smoke. A dusty drive'n'brawl show from the makers of Just Cause.

Collapse

" In 2013 the Central Europe (Ukraine, Kiev) witnessed a catastrophe. Everybody was mystified by its cause. What happened was beyond our comprehension. Somebody called it the collision of worlds or the stratification of two dimensions. " - Steam store page

Dead Synchronicity: Tomorrow Comes Today

Dead Synchronicity: Tomorrow Comes Today is the first game in the Dead Synchronicity series. Guide Michael, an amnesiac, through his first waking moments in the New World - a dying universe created when the Great Wave reverted the world back to the Dark Ages. Explore your new surroundings, talk to whomever can be bothered, and solve puzzles leading to the surprisingly-dark answers to otherwise-mundane questions: who are the "dissolved"? what is "dead synchronicity"? And how far will Michael go to survive in the New World?

Fallout Tactics: Brotherhood of Steel

Tactical Squad-Based Combat comes to the Fallout® Universe!
You are the wretched refuse. You may be born from dirt, but we will forge you into steel. You will learn to bend; if not you, will you break. In these dark times, the Brotherhood - your Brotherhood - is all that stands between the rekindled flame of civilization and the howling, radiated wasteland.