Single-player games like The Horus Heresy: Betrayal at Calth
Below are 20 single-player Steam games similar to The Horus Heresy: Betrayal at Calth, 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 The Horus Heresy: Betrayal at Calth page.
Ranked picks
- 1
Warhammer 40,000: Regicide
Single-player alternative to The Horus Heresy: Betrayal at Calth — playable solo, no multiplayer required. Shares Action and Strategy with The Horus Heresy: Betrayal at Calth.
Warhammer 40,000: Regicide is a brutal take on one of the greatest turn based strategy games of all time. Regicide fuses multiple phases of gameplay with dynamic action. Maneuver your army into place and unleash a devastating array of tactical abilities to crush your enemies.
- 2
Warhammer Age of Sigmar: Storm Ground
Single-player alternative to The Horus Heresy: Betrayal at Calth — playable solo, no multiplayer required. Shares Strategy with The Horus Heresy: Betrayal at Calth.
Conquer the Mortal Realms! The first strategy videogame adaptation of Age of Sigmar’s dark-fantasy universe. Lead your highly-customisable force in challenging roguelike campaigns, unlocking new units, equipment and skills in dynamic, turn-based warfare.
- 3
Adeptus Titanicus: Dominus
Single-player alternative to The Horus Heresy: Betrayal at Calth — playable solo, no multiplayer required. Shares Strategy with The Horus Heresy: Betrayal at Calth.
Adeptus Titanicus: Dominus, the 3D turn-based strategy PC game adaptation of Games Workshop’s Titan Legions tabletop game, puts you in control of the greatest weapons available to the Imperium of Man, the mighty Titans of the Adeptus Titanicus!
- 4
Battlefleet Gothic: Armada 2
Single-player alternative to The Horus Heresy: Betrayal at Calth — playable solo, no multiplayer required. Shares Strategy with The Horus Heresy: Betrayal at Calth.
Battlefleet Gothic: Armada 2 is the new real-time strategy game adapted from Games Workshop’s famous tabletop game that portrays the epic space battles of the Warhammer 40,000 universe.
- 5
Necromunda: Underhive Wars
Single-player alternative to The Horus Heresy: Betrayal at Calth — playable solo, no multiplayer required. Shares Action and Strategy with The Horus Heresy: Betrayal at Calth.
Deep below the hive cities of Necromunda, lead, customize and grow your gang in the twisted tunnels of the dystopian Underhive. Face rival gangs in tactical gunfights for power, wealth, survival, and honor.
- 6
Space Hulk: Tactics (Classic)
Single-player alternative to The Horus Heresy: Betrayal at Calth — playable solo, no multiplayer required. Shares Strategy with The Horus Heresy: Betrayal at Calth.
Space Hulk: Tactics is a faithful adaptation of the board game Space Hulk, set in the Warhammer 40,000 universe, bringing a unique twist to the cult classic formula. Engage in bloody battles as either a squad of Terminator Space Marines or the deadly alien Genestealers.
- 7
Warhammer 40,000: Sanctus Reach (Classic)
Single-player alternative to The Horus Heresy: Betrayal at Calth — playable solo, no multiplayer required. Shares Strategy with The Horus Heresy: Betrayal at Calth.
Warhammer 40,000: Sanctus Reach is a 3D turn-based strategy game like you’ve never seen before: fast, immediate, deep, impressive to look at and incredibly fun! Fight through a dark era of carnage and endless war and lead the Space Wolves in a struggle to defend the last bastion of mankind.
- 8
Warhammer 40,000: Dawn of War III
Single-player alternative to The Horus Heresy: Betrayal at Calth — playable solo, no multiplayer required. Shares Action and Strategy with The Horus Heresy: Betrayal at Calth.
Step into a brutal battle between three warring factions In Dawn of War III you will have no choice but to face your foes when a catastrophic weapon is found on the mysterious world of Acheron.
- 9
The Bureau: XCOM Declassified
Single-player alternative to The Horus Heresy: Betrayal at Calth — playable solo, no multiplayer required. Shares Action with The Horus Heresy: Betrayal at Calth.
The year is 1962 and the Cold War has the nation gripped by fear. A top-secret government unit called The Bureau begins investigating a series of mysterious attacks by an enemy more powerful than communism.
- 10
XCOM® 2
Single-player alternative to The Horus Heresy: Betrayal at Calth — playable solo, no multiplayer required. Shares Strategy with The Horus Heresy: Betrayal at Calth.
XCOM 2 is the sequel to XCOM: Enemy Unknown, the 2012 award-winning strategy game of the year. Earth has changed and is now under alien rule. Facing impossible odds you must rebuild XCOM, and ignite a global resistance to reclaim our world and save humanity.
- 11
Warhammer 40,000: Warpforge
Single-player alternative to The Horus Heresy: Betrayal at Calth — playable solo, no multiplayer required. Shares Strategy with The Horus Heresy: Betrayal at Calth.
A free-to-play digital collectible card game set in the 41st millennium, Warpforge brings together the major factions of the Warhammer 40,000 universe as digital cards for players to collect and do battle with in brutal and fast-paced skirmishes.
- 12
Warhammer 40,000: Space Marine 2
Single-player alternative to The Horus Heresy: Betrayal at Calth — playable solo, no multiplayer required. Shares Action with The Horus Heresy: Betrayal at Calth.
Embody the superhuman skill and brutality of a Space Marine. Unleash deadly abilities and devastating weaponry to obliterate the relentless Tyranid swarms. Defend the Imperium in spectacular third-person action in solo or multiplayer modes.
- 13
Five Nights at Freddy's: Security Breach
Single-player alternative to The Horus Heresy: Betrayal at Calth — playable solo, no multiplayer required. Shares Action with The Horus Heresy: Betrayal at Calth.
In Five Nights at Freddy’s: Security Breach, play as Gregory, a young boy who’s been trapped overnight inside of Freddy Fazbear’s Mega Pizzaplex. With the help of Freddy himself, Gregory must uncover the secrets of the Pizzaplex, learn the truth, and survive until dawn.
- 14
FIVE NIGHTS AT FREDDY'S: HELP WANTED
Single-player alternative to The Horus Heresy: Betrayal at Calth — playable solo, no multiplayer required. Shares Action with The Horus Heresy: Betrayal at Calth.
Five Nights at Freddy’s: Help Wanted is a collection of classic and original mini-games set in the Five Nights universe. Experience the horror in flat (non-VR) mode or VR. Oculus Rift and HTC Vive are supported. A VR Headset is NOT required to play.
- 15
Five Nights at Freddy's: Secret of the Mimic
Single-player alternative to The Horus Heresy: Betrayal at Calth — playable solo, no multiplayer required.
Enter the abandoned workshop of Murray’s Costume Manor and unravel the mystery left behind by the reclusive inventor. In Five Nights at Freddy’s: Secret of the Mimic, you’ll step into a world where every dark corner holds a secret and every flicker of light hints at an ever-present threat.
- 16
Five Nights at Freddy's: Help Wanted 2
Single-player alternative to The Horus Heresy: Betrayal at Calth — playable solo, no multiplayer required.
Five Nights at Freddy’s: Help Wanted 2 is the sequel to the terrifying VR experience that brought new life to the iconic horror franchise. As a brand new Fazbear employee you’ll have to prove you have what it takes to excel in all aspects of Pizzeria management and maintenance.
- 17
Hello Neighbor VR: Search and Rescue
Single-player alternative to The Horus Heresy: Betrayal at Calth — playable solo, no multiplayer required.
A suspenseful family-friendly VR experience set in the Hello Neighbor Universe.
- 18
Quar: Battle for Gate 18
Single-player alternative to The Horus Heresy: Betrayal at Calth — playable solo, no multiplayer required. Shares Action and Strategy with The Horus Heresy: Betrayal at Calth.
Quar: Battle for Gate 18 is a turn-based strategic VR game set in the grimsical world of Alwyd. The Quar are cute alien ant-eaters. Don't mistake cute for gentle. They use their WW1 level technology to wage war across the face of their world.
- 19
Bounce
Single-player alternative to The Horus Heresy: Betrayal at Calth — playable solo, no multiplayer required.
Bounce is a VR physics-based puzzle game for HTC Vive and Oculus Touch. Players are tasked with helping their playful robot companion, D1G-B, bounce, sling, shoot, and roll his way through an increasingly complex labyrinth of rooms on a galactic spaceship making his way to his final destination.
- 20
Mars Odyssey
Single-player alternative to The Horus Heresy: Betrayal at Calth — playable solo, no multiplayer required.
Mars Odyssey is a single player VR simulator experience. Land on Earth’s sister planet. Walk the surface of Mars in your living room and interact with full-scale, realistic NASA Landers and Rovers. Learn about the Red Planet, its history, and its geography in this interactive experience. Play time: 20 min.