Single-player games like Threshold Sector
Below are 9 single-player Steam games similar to Threshold Sector, 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 Threshold Sector page.
Ranked picks
- 1
MOTHERGUNSHIP
Single-player alternative to Threshold Sector — playable solo, no multiplayer required. Shares Action and Indie with Threshold Sector.
MOTHERGUNSHIP is a bullet-hell FPS where you craft your own guns, fight gigantic bosses, and defeat a robotic alien armada that conquered Earth. Face off against overwhelming odds in brutal, non-stop combats where thinking on your feet is the only way to survive.
- 2
Eldritch
Single-player alternative to Threshold Sector — playable solo, no multiplayer required. Shares Action and Indie with Threshold Sector.
Eldritch is the original imsim roguelike: a first-person action game inspired by roguelikes, immersive sims, and H. P. Lovecraft.
- 3
Deadzone: Rogue
Single-player alternative to Threshold Sector — playable solo, no multiplayer required. Shares Action with Threshold Sector.
Deadzone: Rogue is a roguelite FPS set in space. Blast through swarms of hostile machines, combine powerful augments and elements to forge your build, and grow stronger with each run — solo or in co-op.
- 4
Ziggurat
Single-player alternative to Threshold Sector — playable solo, no multiplayer required. Shares Action and Indie with Threshold Sector.
Dungeon-Crawling First Person Shooting at its finest! Fast-paced combat! Dozens of perks, spells and enemies! Level ups! Random Dungeons! Traps! Badass bosses! Carrots!
- 5
Immortal Redneck
Single-player alternative to Threshold Sector — playable solo, no multiplayer required. Shares Action and Indie with Threshold Sector.
Immortal Redneck is a FPS set in Egypt with rogue-lite elements. Frantic gameplay, twitch controls and an arcade-style feel meet randomly generated dungeons, a complete skill tree, permanent death and 9 classes with different traits.
- 6
Tower of Guns
Single-player alternative to Threshold Sector — playable solo, no multiplayer required. Shares Action and Indie with Threshold Sector.
Tower of Guns is a fast paced first-person-shooter for the twitch gamer... with a few randomized elements to keep it fresh with each playthrough. It's a short burst "Lunch Break FPS"... not unlike Binding of Isaac mixed with Doom 2. Tower of Guns was made by a guy named Joe (with his brother Mike composing the music).
- 7
Revita
Single-player alternative to Threshold Sector — playable solo, no multiplayer required. Shares Action and Indie with Threshold Sector.
In this fast paced twin-stick roguelite platformer, you play as an unnamed child ascending an ominous clocktower in pursuit of their lost memories. Harvest and sacrifice souls to grow your power in order to challenge procedural encounter rooms and intimidating bosses!
- 8
ArcRunner
Single-player alternative to Threshold Sector — playable solo, no multiplayer required. Shares Action and Indie with Threshold Sector.
Traverse 'The Arc' in this beautiful, Cyberpunk-styled action rogue-lite as you attempt to reset an evil rogue AI. Experiment with different weapons and augments as you fight hordes of machines programmed for your annihilation! Collect Nanites & power-up after every run either solo or with friends!
- 9
Sinners of Deadgrove
Single-player alternative to Threshold Sector — playable solo, no multiplayer required. Shares Action and Indie with Threshold Sector.
A brutal first-person exploration game with deep combat and survival elements. Play as a Sinner, fighting against mutated creatures with nothing but your skills and equipment, and unravel the mysteries of this land. No magic, no potions, no handholding. Play alone or with a friend.