Single-player games like Spaceguy: Red Space
Below are 16 single-player Steam games similar to Spaceguy: Red Space, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Spaceguy: Red Space page.
Ranked picks
- 1

Ion Fury
Single-player alternative to Spaceguy: Red Space — playable solo, no multiplayer required. Shares Action and Indie with Spaceguy: Red Space.
3D Realms, creators of Duke Nukem 3D, Prey, and Max Payne, team up with Voidpoint to bring back the legendary Build Engine, famous for classic shooters like Duke Nukem 3D, Shadow Warrior, and Blood. Fast-paced FPS combat across huge, secret-packed levels. Ion Fury is the real deal!
- 2

Rise of the Triad: Dark War
Single-player alternative to Spaceguy: Red Space — playable solo, no multiplayer required. Shares Action with Spaceguy: Red Space.
You are part of an elite group of operatives called HUNT (High-risk United Nations Taskforce), and you must stop a maniac cult leader from killing millions of people. You are equipped with high-tech weaponry and magical instruments that defy description to invade the monastery and stop the madness.
- 3

Serious Sam 3: BFE
Single-player alternative to Spaceguy: Red Space — playable solo, no multiplayer required. Shares Action and Indie with Spaceguy: Red Space.
Serious Sam 3: BFE is a prequel to the original indie fast action FPS and Game of the Year sensation - Serious Sam: The First Encounter!
- 4

Crysis® 3
Single-player alternative to Spaceguy: Red Space — playable solo, no multiplayer required. Shares Action and Adventure with Spaceguy: Red Space.
The fate of the world is in your hands. New and old enemies threaten the peace you worked so hard to achieve 24 years ago. Your search for the Alpha Ceph continues, but this time you'll also need to expose the truth behind the C.E.L.L. corporation.
- 5

Turok 3: Shadow of Oblivion Remastered
Single-player alternative to Spaceguy: Red Space — playable solo, no multiplayer required. Shares Action and Adventure with Spaceguy: Red Space.
Finish the hunt in this epic finale to the Turok Trilogy. Pick up immediately after the events of Turok 2: Seeds of Evil, with dual protagonists Joseph and Danielle Fireseed, of the Turok family tree, as they battle the titular antagonist Oblivion and its followers, the Flesh Eaters.
- 6

Warhammer 40,000: Boltgun
Single-player alternative to Spaceguy: Red Space — playable solo, no multiplayer required. Shares Action and Indie with Spaceguy: Red Space.
Load up your Boltgun and unleash the awesome Space Marine arsenal to blast your way through an explosion of sprites, pixels and blood in a perfect blend of Warhammer 40,000, frenetic gameplay and the stylish visuals of 90’s retro shooters.
- 7

Half-Life
Single-player alternative to Spaceguy: Red Space — playable solo, no multiplayer required. Shares Action with Spaceguy: Red Space.
Named Game of the Year by over 50 publications, Valve's debut title blends action and adventure with award-winning technology to create a frighteningly realistic world where players must think to survive. Also includes an exciting multiplayer mode that allows you to play against friends and enemies around the world.
- 8

DOOM II
Single-player alternative to Spaceguy: Red Space — playable solo, no multiplayer required. Shares Action with Spaceguy: Red Space.
Hell has invaded Earth, and to save it, you must battle mightier demons with even more powerful weapons. This beloved sequel to the groundbreaking DOOM (1993) introduced players to the brutal Super Shotgun, the infamous Icon of Sin boss, and more intense FPS action.
- 9

Weapons Genius
Single-player alternative to Spaceguy: Red Space — playable solo, no multiplayer required. Shares Action and Indie with Spaceguy: Red Space.
You act as a weapon genius and create ever new types of weapon with better specifications.
- 10

StarFringe: Adversus
Single-player alternative to Spaceguy: Red Space — playable solo, no multiplayer required.
This is the story about the beginning of the conquest of outer space by earthlings. It began as a global idea of saving mankind from hunger and lack of resources, and ended as a brutal and merciless war in space far from Earth.
- 11

Dark Nebula VR
Single-player alternative to Spaceguy: Red Space — playable solo, no multiplayer required. Shares Action and Indie with Spaceguy: Red Space.
Dark Nebula is a sci-fi VR shooter full of insane encounters and bloody kills.
- 12

Excive A-1000
Single-player alternative to Spaceguy: Red Space — playable solo, no multiplayer required. Shares Action and Indie with Spaceguy: Red Space.
Sometimes the robots set on a riot. Then you start turning them into the ground metal. That is just your job.
- 13

2014.Aftermath
Single-player alternative to Spaceguy: Red Space — playable solo, no multiplayer required. Shares Action and Indie with Spaceguy: Red Space.
Nevertheless, the world has perished. 35 years after the Nuclear Apocalypse, spent in the underground shelter, one of its inhabitants makes up his mind to find way out to the surface.
- 14

Terminal squad: Sentinel
Single-player alternative to Spaceguy: Red Space — playable solo, no multiplayer required. Shares Indie with Spaceguy: Red Space.
The age of an active space conquest by Humanity. You are a simple scout who had been sent out to explore a new planet. You must collect information about it and transfer it to the Center. But is it all that simple or is there anything you still don’t know?
- 15

Terminal squad: Swarmites
Single-player alternative to Spaceguy: Red Space — playable solo, no multiplayer required. Shares Action and Indie with Spaceguy: Red Space.
Terminal squad: swarmites is a game with indirect control where you must erect a chain of buildings, which generate resources for construction or the combat units for destruction of an enemy.
- 16

Weapons Genius VR
Single-player alternative to Spaceguy: Red Space — playable solo, no multiplayer required. Shares Action with Spaceguy: Red Space.
You act as a weapon genius and create ever new types of weapon with better performances.