Single-player games like Trajectory
Below are 8 single-player Steam games similar to Trajectory, 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 Trajectory page.
Ranked picks
- 1
A Collection of Bad Moments
Single-player alternative to Trajectory — playable solo, no multiplayer required. Shares Action and Adventure with Trajectory.
A Collection of Bad Moments is an adventure game where the player discovers themselves in various tough situations and must use their wits to figure a way out! The moments vary from a deadly asteroid mission and mysterious virtual reality simulation to an airship duel!
- 2
The Unknown
Single-player alternative to Trajectory — playable solo, no multiplayer required. Shares Indie and Adventure with Trajectory.
Aboard a small spaceship, you embark on an exploration, daring to face the threats of the universe. Activate your spaceship and uncover the hidden secrets of this vast cosmos.
- 3
XenoFeels
Single-player alternative to Trajectory — playable solo, no multiplayer required. Shares Indie and Adventure with Trajectory.
A space customs simulator. Every day, spaceships from different galaxies fly past your tiny asteroid. Tourists, truckers, travelers... Bad news: There are terrorists among them. If you miss even one, your home planet will explode. Good news: You carry a shotgun!
- 4
Welcome To Mars 9
Single-player alternative to Trajectory — playable solo, no multiplayer required. Shares Indie and Adventure with Trajectory.
You wake up in a luxurious space station orbiting Mars with no memory of your past. Explore, solve puzzles, and make ethical choices in this narrative adventure with multiple endings.
- 5
Return to Grace
Single-player alternative to Trajectory — playable solo, no multiplayer required. Shares Adventure with Trajectory.
A daring space archaeologist has just unearthed the ancient resting place of a long lost A.I. god known as Grace. Adventure with various fractured A.I. personalities as you uncover the great mystery of why she was shut down all those years ago.
- 6
>observer_
Single-player alternative to Trajectory — playable solo, no multiplayer required. Shares Indie and Adventure with Trajectory.
The original first‑person cyberpunk horror detective tale set in a decaying, neon‑scarred future. As an Observer who invades minds to hunt for clues, you will sift through corrupted memories to track down a mysterious killer and confront your own dark past.
- 7
Road 96: Mile 0
Single-player alternative to Trajectory — playable solo, no multiplayer required. Shares Action and Indie with Trajectory.
The prequel to Road 96. Play Zoe and Kaito where it all started. Change their destinies!
- 8
Between Horizons – A Sci-Fi Detective Adventure
Single-player alternative to Trajectory — playable solo, no multiplayer required. Shares Indie and Adventure with Trajectory.
Between Horizons is a narrative 2.5D sci-fi detective adventure. 33 years into the Zephyr's journey, its mission is suddenly jeopardized. Can you find the culprit before it's too late? Experience an enthralling story set in a semi-open world that branches and ends based on your choices.