Single-player games like CASTILLO: Shattered Mirrors
Below are 14 single-player Steam games similar to CASTILLO: Shattered Mirrors, 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 CASTILLO: Shattered Mirrors page.
Ranked picks
- 1

CASTILLO: The Nine Circles
Single-player alternative to CASTILLO: Shattered Mirrors — playable solo, no multiplayer required. Shares Action and Indie with CASTILLO: Shattered Mirrors.
CASTILLO: The Nine Circles is an FPS Collectathon. Collect power shards in each circle of hell to unlock new areas and progress on your quest through 9 diverse worlds. Embark on a journey through the circles of Hell, using unique abilities and weapons.
- 2

DUSK
Single-player alternative to CASTILLO: Shattered Mirrors — playable solo, no multiplayer required. Shares Action and Indie with CASTILLO: Shattered Mirrors.
Battle through an onslaught of mystical backwater cultists, possessed militants & even darker forces as you attempt to discover just what lurks beneath the Earth in this retro FPS inspired by the '90s legends.
- 3

Forgive Me Father
Single-player alternative to CASTILLO: Shattered Mirrors — playable solo, no multiplayer required. Shares Action and Indie with CASTILLO: Shattered Mirrors.
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?
- 4

Nosferatu: The Wrath of Malachi
Single-player alternative to CASTILLO: Shattered Mirrors — playable solo, no multiplayer required. Shares Action and Adventure with CASTILLO: Shattered Mirrors.
It is a misty evening in the year of our lord 1912. The Pattersons, a poor but proud aristocratic family of the British nobility, and some of their closest friends, arrive at the castle Malachi residence of a wealthy Romanian Count.
- 5

Warhammer 40,000: Boltgun
Single-player alternative to CASTILLO: Shattered Mirrors — playable solo, no multiplayer required. Shares Action and Indie with CASTILLO: Shattered Mirrors.
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.
- 6

Blood of the Werewolf
Single-player alternative to CASTILLO: Shattered Mirrors — playable solo, no multiplayer required. Shares Action and Indie with CASTILLO: Shattered Mirrors.
Blood of the Werewolf (2.0) Become Selena, loving mother, devoted wife and -- powerful werewolf. Take revenge on the monsters that have slain your husband and stolen your child, in this love letter to classic platformers.
- 7

Project Warlock
Single-player alternative to CASTILLO: Shattered Mirrors — playable solo, no multiplayer required. Shares Action and Indie with CASTILLO: Shattered Mirrors.
Project Warlock is a first-person shooter that fans of Doom, Hexen, and Wolfenstein cannot miss. It serves you an exploding cocktail of bullets, spells, and monsters. Battle through 60 levels of non-stop action, packed with bloodthirsty enemies and challenging bosses.
- 8

Dread Templar
Single-player alternative to CASTILLO: Shattered Mirrors — playable solo, no multiplayer required. Shares Action and Indie with CASTILLO: Shattered Mirrors.
Dread Templar is a fast-paced hardcore old-school FPS, combining classic 90s shooter and modern FPS elements. Unlock and combine dozens of weapon upgrades and skills, embrace the Dread Force and obliterate hordes of fiendish enemies. Become the scariest thing in hell and get your revenge!
- 9

Serious Sam 3: BFE
Single-player alternative to CASTILLO: Shattered Mirrors — playable solo, no multiplayer required. Shares Action and Indie with CASTILLO: Shattered Mirrors.
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!
- 10

Serious Sam 4
Single-player alternative to CASTILLO: Shattered Mirrors — playable solo, no multiplayer required. Shares Action and Indie with CASTILLO: Shattered Mirrors.
Serious Sam 4 reignites the classic FPS series in a high-powered prequel loaded with an explosive arsenal, intergalactic carnage, and perfectly timed one-liners.
- 11

DOOM
Single-player alternative to CASTILLO: Shattered Mirrors — playable solo, no multiplayer required. Shares Action with CASTILLO: Shattered Mirrors.
Now includes all three premium DLC packs (Unto the Evil, Hell Followed, and Bloodfall), maps, modes, and weapons, as well as all feature updates including Arcade Mode, Photo Mode, and the latest Update 6.66, which brings further multiplayer improvements as well as revamps multiplayer progression.
- 12

Catacomb
Single-player alternative to CASTILLO: Shattered Mirrors — playable solo, no multiplayer required. Shares Action and Indie with CASTILLO: Shattered Mirrors.
Catacomb is a hardcore, melee-focused FPS roguelike inspired by the greats of the early 2000's. Using only your wits, your blade, and over 40 unique artifacts, hack and slash your way back to the surface and earn your freedom.
- 13

Flying Frags World Tour
Single-player alternative to CASTILLO: Shattered Mirrors — playable solo, no multiplayer required. Shares Action and Adventure with CASTILLO: Shattered Mirrors.
Robots have torn open a portal to invade earth, everyone has mysteriously disappeared, the world has begun to tear apart. Sprint across the skies of robot-invaded Earth as you try to end the invasion.
- 14

HYPERJUSTICE
Single-player alternative to CASTILLO: Shattered Mirrors — playable solo, no multiplayer required. Shares Action and Indie with CASTILLO: Shattered Mirrors.
Sprint through neon-stained Miami as you battle the mob and try to prevent the distribution of a world-ending drug. HyperJustice is a fast-paced third-person shooter inspired by 1980’s cop movies and television.