Alien Deathstorm’s Relentless Sci-Fi Horror FPS Was One of Gamescom’s Biggest Surprises

On day three of Gamescom, amid a sea of high-profile reveals and the telltale signs of “Gamescom flu,” one demo cut through the fatigue with startling intensity: Alien Deathstorm. The sci-fi horror first-person shooter from developer and publisher Rebellion delivered roughly thirty minutes of unrelenting swarm-based combat that left this journalist convinced it had become one of the show’s most memorable hands-on experiences, arriving for players in spring 2027.

The game is a singularly focused action experience rather than an ambitious narrative experiment. Built around dynamism and emergent encounters, Alien Deathstorm keeps its tension high throughout each playthrough, with chaotic alien swarms dictating the ebb and flow of combat. In just half an hour on the show floor, the combination of overwhelming numbers and a catastrophic environmental threat felt so potent that it seemed to capture everything essential about the title’s identity.

A Combat Engineer Dispatched Into Chaos

Players take control of a Combat Engineer described as a “highly trained” first responder sent to a remote off-world colony after its inhabitants stop contacting Earth. The mission is to uncover what went wrong, and the answer quickly becomes apparent: monstrous aliens and a sweeping cataclysm known as the deathstorm. Armed with heavy weaponry, the experience evokes a furious spin on Dead Space, where a checklist of systems requiring repair keeps getting interrupted by escalating sci-fi horror.

Rather than building terror slowly, Alien Deathstorm drops players into the action almost immediately. After a minute or two to acclimatize, the onslaught begins in earnest, with aliens swarming from every direction—so much so that Rebellion deliberately omitted a “wipe visor” button, given how often players will want one.

The game does not muck around. Threats come screaming in from all sides, meaning survival depends on constant movement and momentum.

Alien Deathstorm hands-on impression

An Atmosphere Forged in Storm and Shadow

The demo opens with a Scottish voice echoing across the outpost’s public address system, directing the player toward a malfunctioning reactor. This marks just the first of many subsystems that spontaneously fail throughout the facility. Even before combat erupts, Alien Deathstorm establishes a deeply moody atmosphere: stark shadows, flickering industrial lighting, sand eddying through the air, shredded cloth snapping in the ceaseless wind, torrential rain, and massive chunks of debris skidding across water-slicked walkways.

Once inside the outpost’s venting zone, relative calm gives way to ominous red light cutting through thick shadow. Chunky cables snake along the floor while door mechanisms and machinery announce themselves with appropriately atmospheric sci-fi sounds. Players can crack open crates for blueprints, credits, medical injectors, and grenades before reaching the flame-spewing heart of the reactor core, identified by an on-screen overlay rendered in a cheekily Blade Runner-esque typeface.

A Relentless Rhythm That Demands Adaptation

About thirty seconds after locating a terminal to download schematics, the action explodes into chaos. The combat’s unpredictable rhythm quickly becomes apparent: ankle-high creatures that hurl themselves at players alongside hulking Predator-like behemoths with viciously flailing arms arrive from every direction simultaneously. Survival hinges on constant movement, forcing players into what could only be described as a backward-bounding dance while unloading an SMG amid flashing lights and blaring sirens.

The outpost’s labyrinthine layout compounds the difficulty, deliberately designed to disorient. Even with a map and objective marker available, navigating from one point to another proves far from straightforward while under constant assault. Players stumble through a prefab canteen, upgrade terminals for their pistol, shotgun, and SMG, item stations purchasing medical supplies and ammunition, and vast mazes of cargo crates as rain hammers against their visor before descending underground among dangling wires and broken machinery.

The relentless pace proved so punishing that the journalist died repeatedly in rapid succession, prompting a Rebellion employee to linger nearby with visible concern. As the demo concluded, that staff member stepped in to offer reassurance about the final product’s difficulty options.

We’ll have an easy mode in the full game.

Rebellion representative

Looking Ahead

Alien Deathstorm is scheduled for release in spring 2027, arriving on PlayStation 5, Xbox Series X/S, Game Pass, and PC via Steam. The title will be available through the retailer as well.

While Rebellion has confirmed that an easier difficulty setting awaits players in the complete game, the demo’s uncompromising intensity appears to remain central to its identity. For a studio known for its work across the gaming industry, Alien Deathstorm represents a confident step into sustained, high-octane survival horror—and one of Gamescom’s most surprising standouts.