Single-player games like First Contact
Below are 9 single-player Steam games similar to First Contact, 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 First Contact page.
Ranked picks
- 1

Critical Point
Single-player alternative to First Contact — playable solo, no multiplayer required. Shares Indie with First Contact.
Critical Point is a retro sci-fi casual strategy game. You have to make the particle count in reactor cells exceed 4, surpassing the critical point of fission to generate energy required for interstellar voyages.
- 2

ARCA-102
Single-player alternative to First Contact — playable solo, no multiplayer required. Shares Indie and Adventure with First Contact.
Face logic challenges in this Escape Room game, where every second counts! Join Mirra, your mercenary partner, to uncover the mysteries of an abandoned colonizer ship on an unknown planet.
- 3

Machinika: Museum
Single-player alternative to First Contact — playable solo, no multiplayer required. Shares Indie and Adventure with First Contact.
Welcome to the Museum! Machinika Museum is a mystery game where you discover beautiful and mysterious machines of extra-terrestrial origins in an atmospheric galaxy-spanning 3D puzzle game. Will you be able to understand their stories and discover what happened to their previous owner?
- 4

SPACE TOW TRUCK - ISAAC NEWTON's Favorite Puzzle Game
Single-player alternative to First Contact — playable solo, no multiplayer required. Shares Indie and Adventure with First Contact.
Control gravity, orbit around black holes, and have fun mastering physics with your car in space! With this educational puzzle game, only your genius and your analytical skills can get you out of trouble after a painful car crash on the Moon!
- 5

Beyonders
Single-player alternative to First Contact — playable solo, no multiplayer required. Shares Indie and Adventure with First Contact.
Beyonders follows a 5-person co-op elite space crew (including one dog!) sent across the solar system to investigate anomalies, recover lost assets, and survive extreme environments. Using the scientific method and cooperative engineering, players complete missions. "Could it be aliens? Never!"
- 6

SpaceChem
Single-player alternative to First Contact — playable solo, no multiplayer required. Shares Indie with First Contact.
Zachtronics is back with an ambitious new design-based puzzle game. Take on the role of a Reactor Engineer working for SpaceChem, the leading chemical synthesizer for frontier colonies. Construct elaborate factories to transform raw materials into valuable chemical products!
- 7

Prime Mover
Single-player alternative to First Contact — playable solo, no multiplayer required. Shares Indie with First Contact.
Retrace the path of the Prime Mover to uncover the story of the Byte of Burden! Prime Mover is an open-ended puzzle game about designing circuit boards.
- 8

Newton's Fourth Law
Single-player alternative to First Contact — playable solo, no multiplayer required. Shares Indie and Adventure with First Contact.
Fight against brain-rot in this story-driven educational physics puzzle game. You will need to learn and apply high school physics concepts to solve increasingly challenging problems and uncover a galaxy spanning plot. When you have finished, you will be able to take a college level physics course.
- 9

Human or Not
Single-player alternative to First Contact — playable solo, no multiplayer required. Shares Indie with First Contact.
Aliens are infiltrating Earth disguised as humans! It's your job to expose these imposters. Can you tell who is human and who is not? Choose your own path while you keep the Earth safe.