Games like Operator8

If the retro and tense rhythm of Operator8 stuck with you, this helps. These games could fill that gap nicely.

Alien Shooter - Last Hope
New chapter in history of the legendary game, including 10 story missions.
Retro, Tense, Dark
77% of 328 Steam reviews are positivePlayers online now: 1$4.99
Retchid
You are a TEC Engineer from Earth ordered to retrieve and return sensitive data from the TEC Mining Facility on Titan. On arrival, you discover that the facility has been invaded by beings from another realm. Contend with these abominations as you complete your mission and escape Titan.
Retro, Tense, Dark
77% of 57 Steam reviews are positive$24.99
Level Zero: Extraction
Tactical extraction shooter meets immersive survival horror. Play as rival mercenaries fighting for loot, or as alien monsters hunting humans from the shadows. Solo or with friends, experience this unique dark take on asymmetrical PvPvE multiplayer.
Tense, Dark, Scary
50% of 2,449 Steam reviews are positive$19.99
Space Beast Terror Fright
A very hard first-person roguelike where Marines board dark, Beast-infested ships to download DataCores, overload the reactor and run for the Airlock. One hit kills, every map is new, and co-op turns panic into a team sport.
Retro, Tense, Dark
91% of 1,261 Steam reviews are positivePlayers online now: 5$14.99
Moon Runner
You are tasked with urgent maintenance on a small moon. Find the monoliths and manage your survival to complete your mysterious assignment.
Tense, Scary, Atmospheric
86% of 301 Steam reviews are positivePlayers online now: 1Free
RIPOUT
Ripout is an online Co-Op horror FPS that will have players fight their way through procedurally generated derelict ships filled with mutants capable of reconfiguring their alien bodies. Survive with your trusty Pet Gun companion, collect loot, and customize your character to fit your playstyle.
Tense, Dark, Scary
65% of 786 Steam reviews are positive$19.99
HELL OF FEAR: Mind Breach
Step into the boots of Major Axel Vex in this survival horror descent into deep space. You embark on a mission to investigate a distress signal coming from Cengona Base. What starts off as a simple mission quickly turns into a terrifying, action-packed fight for survival.
Tense, Dark, Scary
86% of 92 Steam reviews are positive$16.99
Dead Space (2008)
Engineer Isaac Clarke answers a repair call on the mining ship USG Ishimura and finds the crew slaughtered by Necromorphs, monsters that shrug off headshots. So you cut off their limbs with mining tools, in zero gravity, while the ship whispers around you. A survival horror classic where the atmosphere is as sharp as the sawblades.
Retro, Tense, Dark
92% of 23,056 Steam reviews are positivePlayers online now: 97$19.99
From Space
A top-down shooter about kicking a pink alien horde off Earth, alone or with up to three friends. Grab rocket launchers and flamethrowers, wire up turrets and barbed wire, and turn a beat-up planet into even more rubble. The apocalypse has never been this cheerful.
Tense, Brutal
67% of 1,429 Steam reviews are positive$2.99
OPERATOR
OPERATOR is a slow, strict tactical shooter where you play a Tier 1 operator on clandestine missions around the world. Every corner, doorway, and magazine counts, with full-body first person movement, detailed weapon building, and planning to match. Worth playing if you want gunfights that punish rushing.
Tense, Dark, Brutal
86% of 9,219 Steam reviews are positivePlayers online now: 955$19.99
Alien Attack
You are a space trooper. Your crew finished the cleaning mission and left you alone by accident. Now you are surrounded by aliens. Persist them as long as you can.
Retro, Tense
82% of 182 Steam reviews are positive$1.99
HYPERVIOLENT
An ancient evil has awoken in the depths of a remote mining asteroid, stirred from its slumber by man's lust for power. Unaware, you answer a distress call and become stranded, surrounded by monstrous foes. Unravel the mystery of this madness and stop its spread in this horror retro shooter!
Retro, Tense, Dark
68% of 157 Steam reviews are positive$14.99

Cheaper than Operator8

Alien Attack

You are a space trooper. Your crew finished the cleaning mission and left you alone by accident. Now you are surrounded by aliens.

$1.99

The guard of dungeon

The Guard of Dungeon - This is the mad first-person shooter. The Unknown Alien Force (UAF) wants to enslave Our World.

$1.99

Alien Breed 2: Assault

Can you survive the alien onslaught? Gamers across the world will now have a chance to play the next chapter in this high-budget, high-quality series.

$1.99

Atomic 79

Atomic 79 is an intense, yet lighthearted, physics based first person shooter set in a cursed impact crater.

$1.99

Humanity Asset

Humanity Asset is a Metroid-style 3D platformer that pays homage to the traditional retro classic shoot ‘em up genre.

$1.99

Trench Face

Trench Face is a horror turn based war RPG featuring exploration-based dungeons, with hanging monsters lurking around each corner.

$2.24

Mother Hub

A retro FPS with an artistically gritty setting from the early 2000's. Uncover futuristic weapons lost to time and face off against terrifying bosses.

$2.19

Alien Scumbags

Alien Scumbags is a sci-fi action platformer with a big slice of horror and a stack of pop culture references.

$5.99

CARNAL

CARNAL is a fast and challenging retro FPS straight from the mid '90s.

$0.99

Final Directive

Final Directive is a story driven shooter set in a space station disastrously infested by alien mutants.

$1.99

Xenosensory

Xenosensory is a short incremental game with horror themes. Use your cursor to bust Xenos and save convicts then spend your research points on skill…

$2.39

The Tower on the Borderland

A horror game inspired by Super Metroid and The House on the Borderland.

$1.59

Hidden gems like Operator8

HOPE 01

Raid a dying underground cluster for weapons and supplies, then get back to your hideout before the horrors take it all.

$11.99

RetroSpace

A janitor fights through a station eaten by a black hole, where every death just means another clone and another way through.

$19.99

SCP: Fragmented Minds

You wake from cryosleep at a collapsed SCP facility on Mars and search its ruins for survivors, answers and a way out.

$9.99

Let Them Come: Onslaught

Survive the relentless offensive of the alien horde in Let Them Come: Onslaught, a sci-fi survival roguelite.

$7.99

Project Silverfish

Scavenge what you can, stay out of sight when you must, and piece together humanity's fate one dangerous run at a time.

$29.99

Viscerafest

Viscerafest is a Sci-Fi Fantasy Singleplayer Arena FPS with minor Collectathon elements.

$19.99

ROUTINE

A first-person sci-fi horror on an abandoned lunar base built around an 80s vision of the future.

$16.24

EMPTY SHELL

You sign up for a recovery operation in an abandoned facility on a Japanese island, then die and get replaced by the next volunteer.

$11.99

Species: Unknown

Take a contract on an abandoned ship, figure out which creature is stalking your crew, and survive the run.

$9.99

SENTRY

Defend your spaceship from alien boarders with guns, traps and blast doors while plotting your escape through hostile space.

$15.99

Space Beast Terror Fright

Raid procedurally generated ghost ships with up to three friends, grab the data, blow the reactor and escape before it blows you.

$14.99

Project: Mist

Scavenge a monster-haunted island, build a moving base on rails, and uncover its secrets alone or with friends.

$17.99

Newest games like Operator8