Single-player games like DIOXIDE
Below are 12 single-player Steam games similar to DIOXIDE, 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 DIOXIDE page.
Ranked picks
- 1

Everlasting Guilt
Single-player alternative to DIOXIDE — playable solo, no multiplayer required. Shares Action and Indie with DIOXIDE.
if you’re into Doom, Furi \ Titan Souls, this game will fulfill your needs with its FPS, fast-paced gameplay that heavily focuses on Boss fights, each with a unique approach that has its own mechanics, and a load of enemies to unleash your anger and test your arsenal upon.
- 2

Legacy of Mind
Single-player alternative to DIOXIDE — playable solo, no multiplayer required. Shares Action and Indie with DIOXIDE.
A first-person horror RPG where nightmare and reality have merged. Hunt nightmare-born Umbrae and journey across forsaken lands where the strongest beasts claim dominion. Face Monarchs in brutal soulslike FPS combat and confront the mind that first gave flesh to the fear that hunts...
- 3

Descensus
Single-player alternative to DIOXIDE — playable solo, no multiplayer required. Shares Action with DIOXIDE.
Descensus is a souls-like action-RPG with challenging combat set in post-catastrophe diesel punk world. The player's goal is to reach the heart of the mysterious Rift of the Fallen Star. It is necessary to stop the expansion and spread of the anomaly before it absorbs the whole world.
- 4

Beast Brigade
Single-player alternative to DIOXIDE — playable solo, no multiplayer required. Shares Action with DIOXIDE.
The new mob arena game, Beast Brigade, delivers an intense, action-packed experience - bringing monsters and modern combat together. Armed with an arsenal of advanced and powerful weaponry, explore a wide variety of creatures to assist you.
- 5

41 Hours
Single-player alternative to DIOXIDE — playable solo, no multiplayer required. Shares Action with DIOXIDE.
41 Hours is a first-person shooter dramatic game that follows the narrative of Ethan, a workaholic scientist in search of his long-lost wife. The story is intriguing and it takes several surprising turns as it develops over 11 Chapters and 20 hours of gameplay.
- 6

Swarm
Single-player alternative to DIOXIDE — playable solo, no multiplayer required. Shares Action and Indie with DIOXIDE.
"SPIDER-MAN WITH GUNS — this is what VR was made for!" SWARM is a fast-paced, arcade-style grapple shooter, with quick sessions, bright colorful worlds and globally competitive leaderboards that will take you back to the glory days of Arcade Games.
- 7

REMNANT II®
Single-player alternative to DIOXIDE — playable solo, no multiplayer required. Shares Action with DIOXIDE.
REMNANT II® pits survivors of humanity against new deadly creatures and god-like bosses across terrifying worlds. Play solo or co-op with two other friends to explore the depths of the unknown to stop an evil from destroying reality itself.
- 8

Volunteer
Single-player alternative to DIOXIDE — playable solo, no multiplayer required. Shares Action and Indie with DIOXIDE.
Experience first-person horror and fight to survive in a chaotic landscape infested with bloodthirsty creatures.
- 9

Forgive Me Father
Single-player alternative to DIOXIDE — playable solo, no multiplayer required. Shares Action and Indie with DIOXIDE.
Forgive Me Father is a dark retro horror FPS set in a comic book style world inspired by the novels of H.P. Lovecraft. As the only one left with full senses, you begin a journey in search of answers and relief. How long can you last?
- 10

Forgive Me Father 2
Single-player alternative to DIOXIDE — playable solo, no multiplayer required. Shares Action and Indie with DIOXIDE.
Embark on a journey into the darkest nightmares to restore your sanity. Blast your way through hordes of possessed enemies, unlock an arsenal of deadly weapons and unearthly abilities, and get ready to face even more Lovecraftian madness in this action-packed FPS sequel.
- 11

MythBusters: The Game - Crazy Experiments Simulator
Single-player alternative to DIOXIDE — playable solo, no multiplayer required. Shares Action with DIOXIDE.
Be a MythBuster in front and behind the camera! The game is a first-person sim that adapts the famous Discovery show. Run crazy experiments and manage the production of episodes.
- 12

MythBusters: The First Experiment
Single-player alternative to DIOXIDE — playable solo, no multiplayer required. Shares Action with DIOXIDE.
MythBusters: The First Experiment is a free introduction to the first-person creative simulator based on the legendary Discovery show. Learn how to run crazy experiments and manage the production of episodes. Take the first steps to become a MythBuster!