Single-player games like .T.E.S.T: Expected Behaviour — Sci-Fi 3D Puzzle Quest
Below are 13 single-player Steam games similar to .T.E.S.T: Expected Behaviour — Sci-Fi 3D Puzzle Quest, 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 .T.E.S.T: Expected Behaviour — Sci-Fi 3D Puzzle Quest page.
Ranked picks
- 1
Dreaminal
Single-player alternative to .T.E.S.T: Expected Behaviour — Sci-Fi 3D Puzzle Quest — playable solo, no multiplayer required. Shares Indie and Adventure with .T.E.S.T: Expected Behaviour — Sci-Fi 3D Puzzle Quest.
DREAMINAL is a deeply immersive horror experience for 1-4 players. Sent from a megacorp to be the "pioneer" of solving a global problem, but you quickly discover things aren't as they promised. Survive and find your way out of the Backrooms... if escape is even possible.
- 2
Strange
Single-player alternative to .T.E.S.T: Expected Behaviour — Sci-Fi 3D Puzzle Quest — playable solo, no multiplayer required. Shares Indie and Adventure with .T.E.S.T: Expected Behaviour — Sci-Fi 3D Puzzle Quest.
The main character, who moves to another city, finds himself in unexpected mysterious events when her new friend disappears.
- 3
Time Machine VR
Single-player alternative to .T.E.S.T: Expected Behaviour — Sci-Fi 3D Puzzle Quest — playable solo, no multiplayer required. Shares Indie and Adventure with .T.E.S.T: Expected Behaviour — Sci-Fi 3D Puzzle Quest.
You are a time traveller tasked with exploring the Jurassic era and the creatures that once ruled the prehistoric oceans. Use an array of advanced tech tools to track, examine, and discover the scientific secrets of mosasaurs, livyatans, and megalodons, among others!
- 4
MirrorMoon EP
Single-player alternative to .T.E.S.T: Expected Behaviour — Sci-Fi 3D Puzzle Quest — playable solo, no multiplayer required. Shares Indie and Adventure with .T.E.S.T: Expected Behaviour — Sci-Fi 3D Puzzle Quest.
MirrorMoon EP is a game about mystery and exploration set in outer space. These space travels begin on a red planet and its unique moon and extend across galaxies. The single player part of MirrorMoon EP blends adventure and exploration with navigation-based puzzle solving.
- 5
The Entropy Centre
Single-player alternative to .T.E.S.T: Expected Behaviour — Sci-Fi 3D Puzzle Quest — playable solo, no multiplayer required. Shares Adventure with .T.E.S.T: Expected Behaviour — Sci-Fi 3D Puzzle Quest.
Think in reverse. Outsmart the impossible. A mind-bending first-person adventure where you solve ingenious and complex puzzles by rewinding objects through time.
- 6
Beyond Flesh and Blood
Single-player alternative to .T.E.S.T: Expected Behaviour — Sci-Fi 3D Puzzle Quest — playable solo, no multiplayer required. Shares Action and Indie with .T.E.S.T: Expected Behaviour — Sci-Fi 3D Puzzle Quest.
Space is easy... Prepare for Earth.Beyond Flesh and Blood is the harsh shooter designed to push your skills to the limit.
- 7
Master Reboot
Single-player alternative to .T.E.S.T: Expected Behaviour — Sci-Fi 3D Puzzle Quest — playable solo, no multiplayer required. Shares Action and Indie with .T.E.S.T: Expected Behaviour — Sci-Fi 3D Puzzle Quest.
Imagine a world where death is no longer final, where precious memories are saved to enjoy forever, where your soul is immortal. Master Reboot is a haunting first-person sci-fi adventure.
- 8
No Time
Single-player alternative to .T.E.S.T: Expected Behaviour — Sci-Fi 3D Puzzle Quest — playable solo, no multiplayer required. Shares Action and Indie with .T.E.S.T: Expected Behaviour — Sci-Fi 3D Puzzle Quest.
Go on a trip through time! Experience the freedom of traveling into any date, hour and minute in time between the years 1 and 3033 AD! Help your best friend Edward in his scientific affairs! Watch out for the Time Agents & avoid yourself!
- 9
Portal
Single-player alternative to .T.E.S.T: Expected Behaviour — Sci-Fi 3D Puzzle Quest — playable solo, no multiplayer required. Shares Action with .T.E.S.T: Expected Behaviour — Sci-Fi 3D Puzzle Quest.
Portal™ is a new single player game from Valve. Set in the mysterious Aperture Science Laboratories, Portal has been called one of the most innovative new games on the horizon and will offer gamers hours of unique gameplay.
- 10
The Talos Principle
Single-player alternative to .T.E.S.T: Expected Behaviour — Sci-Fi 3D Puzzle Quest — playable solo, no multiplayer required. Shares Action and Indie with .T.E.S.T: Expected Behaviour — Sci-Fi 3D Puzzle Quest.
The Talos Principle is a first-person puzzle game in the tradition of philosophical science fiction. Made by Croteam and written by Tom Jubert (FTL, The Swapper) and Jonas Kyratzes (The Sea Will Claim Everything).
- 11
NaissanceE
Single-player alternative to .T.E.S.T: Expected Behaviour — Sci-Fi 3D Puzzle Quest — playable solo, no multiplayer required. Shares Indie and Adventure with .T.E.S.T: Expected Behaviour — Sci-Fi 3D Puzzle Quest.
NaissanceE is an obscure and magical first person exploration game, a philosophical trip and an artistic experience. The adventure takes place in a primitive mysterious structure and the game mainly consists to explore and feel the deep and strong ambiance of this atemporal world.
- 12
Antichamber
Single-player alternative to .T.E.S.T: Expected Behaviour — Sci-Fi 3D Puzzle Quest — playable solo, no multiplayer required. Shares Indie and Adventure with .T.E.S.T: Expected Behaviour — Sci-Fi 3D Puzzle Quest.
Antichamber is a mind-bending psychological exploration game where nothing can be taken for granted. Discover an Escher-like world where hallways wrap around upon each other, spaces reconfigure themselves, and accomplishing the impossible may just be the only way forward.
- 13
Phantom Signal — Sci-Fi Strategy Game
Single-player alternative to .T.E.S.T: Expected Behaviour — Sci-Fi 3D Puzzle Quest — playable solo, no multiplayer required. Shares Simulation with .T.E.S.T: Expected Behaviour — Sci-Fi 3D Puzzle Quest.
Phantom Signal is a real-time sci-fi strategy game with unusual mechanics. Explore mysterious star systems and reveal the secret of the phantom signal.