Single-player games like Californium
Below are 15 single-player Steam games similar to Californium, 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 Californium page.
Ranked picks
- 1

Looking For Fael
Single-player alternative to Californium — playable solo, no multiplayer required. Shares Indie and Adventure with Californium.
Hello, this is Fael... Listen, this is going to sound strange, but... I think I'm lost in the apartment. Right now... I... I don't know where I am. Can you come and help me?
- 2

GlitchPets
Single-player alternative to Californium — playable solo, no multiplayer required. Shares Indie and Adventure with Californium.
This game is still in development: kind of a puzzle-platform-climb-story-adventure where your cartridge 'pets' glitches out from pet pee. You control a "debug" npc
- 3

The Burrito Quest
Single-player alternative to Californium — playable solo, no multiplayer required. Shares Indie and Adventure with Californium.
Your burrito is missing. You have to find it. What are you waiting for?
- 4

PALINGENESIS
Single-player alternative to Californium — playable solo, no multiplayer required. Shares Indie and Adventure with Californium.
A music-driven puzzle adventure where sound shapes the world. Solve mysteries, escape the Human Wheel, and experience the album by GRIGS in PALINGENESIS.
- 5

Intraquartz
Single-player alternative to Californium — playable solo, no multiplayer required. Shares Indie and Simulation with Californium.
INTRAQUARTZ is a multidimensional experimental maze puzzler where you control a microscopic mining rover inside extraterrestrial crystals.
- 6

Manifold Garden
Single-player alternative to Californium — playable solo, no multiplayer required. Shares Indie and Adventure with Californium.
Rediscover gravity and explore an Escher-esque world of impossible architecture. Witness infinity in first-person and master its rules to solve physics-defying puzzles. Cultivate a garden to open new paths forward, where an eternal expanse awaits.
- 7

TRIP Steam Edition
Single-player alternative to Californium — playable solo, no multiplayer required. Shares Indie and Adventure with Californium.
Explore an avant-garde cubist dream, stimulate your visual senses and immerse yourself in a surreal TRIP. A visually tantalizing open world artware that culminates the player to relax and enjoy a safe enviroment for them to explore at their own pace. There are no objectives, no rules, just art.
- 8

Oneiros
Single-player alternative to Californium — playable solo, no multiplayer required. Shares Indie and Adventure with Californium.
Will you be able to break the vicious circle? Can you regain control? Experience the surreal adventure filled with many puzzles and psychedelic visions.
- 9

The Stanley Parable
Single-player alternative to Californium — playable solo, no multiplayer required. Shares Indie and Adventure with Californium.
The Stanley Parable is a first person exploration game. You will play as Stanley, and you will not play as Stanley. You will follow a story, you will not follow a story. You will have a choice, you will have no choice. The game will end, the game will never end.
- 10

The Witness
Single-player alternative to Californium — playable solo, no multiplayer required. Shares Indie and Adventure with Californium.
You wake up, alone, on a strange island full of puzzles that will challenge and surprise you.
- 11

SOMA
Single-player alternative to Californium — playable solo, no multiplayer required. Shares Indie and Adventure with Californium.
From the creators of Amnesia: The Dark Descent comes SOMA, a sci-fi horror game set below the waves of the Atlantic ocean. Struggle to survive a hostile world that will make you question your very existence.
- 12

Paradise Killer
Single-player alternative to Californium — playable solo, no multiplayer required. Shares Indie and Adventure with Californium.
Paradise Island, a world outside reality. There’s been a murder that only "investigation freak" Lady Love Dies can solve. Gather evidence and interrogate suspects in this open world adventure. You can accuse anyone, but you’ll have to prove your case in trial. It’s up to you to decide who’s guilty.
- 13

The Stanley Parable: Ultra Deluxe
Single-player alternative to Californium — playable solo, no multiplayer required. Shares Indie and Adventure with Californium.
The Stanley Parable: Ultra Deluxe is an expanded re-imagining of 2013's The Stanley Parable. You will play as Stanley, and you will not play as Stanley. You will make a choice, and you will become powerless. You are not here to win. The Stanley Parable is a game that plays you.
- 14

Labyrinth City: Pierre the Maze Detective
Single-player alternative to Californium — playable solo, no multiplayer required. Shares Indie and Adventure with Californium.
Adapted from the bestselling children’s book series Pierre The Maze Detective, play as Pierre in this adventure/puzzle game and recover the stolen Maze Stone. Journey through breathtakingly hand-drawn illustrations, meet eccentric characters, and solve puzzles to save Opera City!
- 15

The Merlies
Single-player alternative to Californium — playable solo, no multiplayer required. Shares Indie and Adventure with Californium.
Meet the Merlies, a tiny birds community trying to find harmony in a cute post-apocalyptic world filled with the remains of a long forgotten civilization. Gather your birdies, explore this wild world with your tiny bird squad and complete your village out of collected scraps!