Single-player games like Cross The Boundaries
Below are 11 single-player Steam games similar to Cross The Boundaries, 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 Cross The Boundaries page.
Ranked picks
- 1

Argumentum ad culpam
Single-player alternative to Cross The Boundaries — playable solo, no multiplayer required. Shares Indie and Adventure with Cross The Boundaries.
Argumentum ad culpam is a gothic visual novel about the world of eternal agony. A capricious dance of principles and death. Take part in twisted battles of wits, where morality is only a tool for survival, and decide what future that world will have.
- 2

Dreambound
Single-player alternative to Cross The Boundaries — playable solo, no multiplayer required. Shares Indie with Cross The Boundaries.
Mysterious deaths. Dreams that are reality, and reality that is a dream. Will Noah be able to move forward and solve the mystery—or will he give in to the demons of his past? A story-rich BL mystery visual novel.
- 3

Snowdome
Single-player alternative to Cross The Boundaries — playable solo, no multiplayer required. Shares Indie and Adventure with Cross The Boundaries.
For Tan Yan, there is little hope his life will change. It's like his whole life is trapped inside a snowdome, unable to escape. But, what if, one day, he's given the chance to make a change?
- 4

Re:Turn - One Way Trip
Single-player alternative to Cross The Boundaries — playable solo, no multiplayer required. Shares Indie and Adventure with Cross The Boundaries.
Re:Turn - One Way Trip is a 2D side-scrolling puzzle-adventure horror game. Trapped in a ghostly train, Saki must search the past and present to find and save her friends. More importantly, Saki must use her wits if she is to survive against an unspeakable evil hellbent on avenging unrequited love.
- 5

DAEMON MASQUERADE
Single-player alternative to Cross The Boundaries — playable solo, no multiplayer required. Shares Indie and Adventure with Cross The Boundaries.
An anime-inspired supernatural detective game. Uncover the identities and powers of your adversaries using a conspiracy board full of evidence.
- 6

노베나 디아볼로스
Single-player alternative to Cross The Boundaries — playable solo, no multiplayer required. Shares Indie and Adventure with Cross The Boundaries.
Novena diabolos is an Ocult mystery adventure game. The main character, Park Joon-sung, has to find a single human woman who doesn't know who she is and get out of town safely.
- 7

EDENGATE: The Edge of Life
Single-player alternative to Cross The Boundaries — playable solo, no multiplayer required. Shares Adventure with Cross The Boundaries.
Mia Lorenson, wakes up in an abandoned hospital full of questions. What happened to her? What happened to the world? Edengate: The Edge of Life is an interactive experience reflecting on feelings of uncertainty, isolation and hope in the face of devastation.
- 8

Seventh Lair
Single-player alternative to Cross The Boundaries — playable solo, no multiplayer required. Shares Indie and Adventure with Cross The Boundaries.
Seventh Lair is a short visual novel featuring some cast members of The House in Fata Morgana. It exists in a parallel universe to the original game, so it can be enjoyed even by those unfamiliar with it.
- 9

RAIN Project - a touhou fangame
Single-player alternative to Cross The Boundaries — playable solo, no multiplayer required. Shares Indie and Adventure with Cross The Boundaries.
RAIN Project is a Touhou fangame re-imagined as a platforming boss-bash! After a ritual gone wrong, the newbie shrine maiden Sanae awakes in a world of fantasy. With only the storms to guide her, Sanae sets off to scale a towering mountain in search of answers.
- 10

Corpse Party (2021)
Single-player alternative to Cross The Boundaries — playable solo, no multiplayer required. Shares Adventure with Cross The Boundaries.
Explore the haunted halls of Heavenly Host Elementary in Corpse Party (2021), the horror cult classic now updated for the next generation.
- 11

Project T
Single-player alternative to Cross The Boundaries — playable solo, no multiplayer required.
It’s with a heavy heart that we announce that Project T has been canceled. We want to thank you for your support throughout this journey.