Top similar games like They Came From Dimension X:

DISDAIN is a fast-paced, visceral retro-styled first person shooter, inspired by the legendary FPS games of yesteryear.

Arriving on a hunt in a small village, you become a witness to attack of alien forces on the ground, armed with a shotgun, you decide to repulse the alien intruders.

Take on the role of a journalist trapped in a ruthless quantum universe where you'll need a diverse arsenal and the manipulation of quantum physics to survive and progress. Quick thinking, speed, and precision will be essential to surviving in this retro style physics FPS

As part of the elite Rhino Squad, you must spearhead Earth’s military invasion of a hostile alien homeworld. But, in this desperate war for humanity’s survival against an unrelenting enemy, you may discover that the only way to defeat them...is to become one of them.

Battle across the solar system as annihilation looms over mankind in this action sci-fi horror FPS. Powered by id Tech, THREAT VECTOR delivers classic FPS combat throughout a suite of concise, potent levels infested with deadly horrors… and loaded with enough firepower to destroy them all.

Survival horror FPS with a physics-driven weapon system. You are bound to a sinister conveyor mechanism. Reach for weapons and items, navigate labyrinthine tunnels, and blast your path to worthiness!

Escape from the depths of a top-secret research facility as you slash through creatures like giant mutant aliens, robot demons, and countless other experiments gone wrong. Inspired by classic games like Half-Life, Quake, and Doom, The Enemy Below raises the bar of what a modern retro-FPS can be.

This terrifying 1990s sci-fi first-person shooter from Capstone Software has you venturing deep into the dark and twisting test chambers of Corridor 7 to combat a hostile takeover of Earth.

Survive in a world full of darkness. Gain resources. Kill entities. Repeat. But beware, there might be entities lurking around...

Malevolent Star is a first-person shooter with retro graphics, an eerie narrative experience, and simple, engaging combat. Fight against clever enemies, crazy enemies, and terrifying enemies (in approximately that order) to uncover the mysteries of the last of the living machine planets.

Explore a vast space station caught in a crisis and adrift in the void. Discover new weapons, fight challenging foes, and discover the dark secrets of Project HOSTILE in this in this Sci-fi Metroidvania.

Aliens Versus Predator Classic 2000 features the Colonial Marine, Alien and Predator Campaigns and the frenetic single-player Skirmish mode from the original title: Alien Versus Predator Gold Edition, which was released to massive acclaim in 2000.

Made by Gearbox Software and originally released in 2001 as an add-on to Half-Life, Blue Shift is a return to the Black Mesa Research Facility in which you play as Barney Calhoun, the security guard sidekick who helped Gordon out of so many sticky situations.

Giedi Satellite takes a job as a wildlife handler on a colossal nature preserve space station that goes awry in comedic and horrific fashion. Become an Alien Wildlife Control Specialist in this horromedy adventure.

Assert dominance in this Retro Reptilian oriented First Person Shooter. No humans allowed! GET VAL'TED!

Reawakened from stasis in the occupied metropolis of City 17, Gordon Freeman is joined by Alyx Vance as he leads a desperate human resistance. Experience the landmark first-person shooter packed with immersive world-building, boundary-pushing physics, and exhilarating combat.

A massive demonic invasion has overwhelmed the Union Aerospace Corporation's (UAC) Mars Research Facility, leaving only chaos and horror in its wake. As one of only a few survivors, you must fight your way to hell and back against a horde of evil monsters.

Winner of over 50 Game of the Year awards, Half-Life set new standards for action games when it was released in 1998. Half-Life: Source is a digitally remastered version of the critically acclaimed and best selling PC game, enhanced via Source technology to include physics simulation, enhanced effects, and more.

On Your Hands is a game which seeks to merge complex puzzle mechanics with a creepy atmosphere and terrifying enemies. Can you use the seven unique magic types to make your way off a strange alien planet?

Embark on a distorted journey as Voidwalker, battling chaotic entities and unraveling secrets to save your universe. With retro graphics and the Quake engine, brace yourself for intense first-person shooter combat.

A space horror game with retro-like pixelation and dithering effects, where you explore a desolate spacecraft and its mysteries.

Enter a realm of nightmares and claw and shoot your way through hordes of bloodthirsty vermin and things that are much, much worse in this retro FPS

Scour through the fallen foundry, obscuring enemies and creatures whilst plundering to your death, get ripped apart or circumvent through harsh environments and traps. Let the gun do the talking, so sit back, relax and blow everything to pieces.

Shrine is a retro FPS game about a skinless dude killing eldritch monstrosities with his nightmarish arsenal.

Introducing the Master Levels for DOOM II. Twenty never-before-seen levels all with the same acid drenched, hell spawned horror of the originals. Each was created by independent designers and supervised by the demented minds of id Software. You might as well forget about seeing the light of day ever again.