Single-player games like Aethernaut
Below are 13 single-player Steam games similar to Aethernaut, 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 Aethernaut page.
Ranked picks
- 1
Portal
Single-player alternative to Aethernaut — playable solo, no multiplayer required.
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.
- 2
Another Sight - Definitive Edition
Single-player alternative to Aethernaut — playable solo, no multiplayer required. Shares Indie and Adventure with Aethernaut.
A teenager who has lost her sight and a mysterious cat team up in a surreal fantasy adventure into the unexpected, weaving a tale that brings together some of the world’s greatest minds: Monet, Tesla, Edison and other historical cultural icons.
- 3
Q.U.B.E. 2
Single-player alternative to Aethernaut — playable solo, no multiplayer required. Shares Indie and Adventure with Aethernaut.
Q.U.B.E. 2 is the sequel to the hit first-person puzzle game Q.U.B.E. You are Amelia Cross, a stranded archaeologist who has awoken among the ruins of an ancient alien landscape. With the distant help of another survivor you must solve the puzzles of this mysterious world and find a way back home.
- 4
The Crow's Eye
Single-player alternative to Aethernaut — playable solo, no multiplayer required. Shares Indie and Adventure with Aethernaut.
In an abandoned medical university, test your intellectual might as you unravel a 20-year-old mystery in this depraved first-person puzzle adventure, doing what it takes to escape your fate as a macabre scientist's human experiment. The ends justify the means in The Crow’s Eye.
- 5
The Talos Principle
Single-player alternative to Aethernaut — playable solo, no multiplayer required. Shares Indie and Adventure with Aethernaut.
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).
- 6
Toren
Single-player alternative to Aethernaut — playable solo, no multiplayer required. Shares Indie and Adventure with Aethernaut.
Experience the mysterious, timeless world of Toren, the first adventure game from Brazilian indie developer Swordtales. You are Moonchild, destined to climb the tower (known as Toren) on a hauntingly solitary journey to find your purpose.
- 7
NaissanceE
Single-player alternative to Aethernaut — playable solo, no multiplayer required. Shares Indie and Adventure with Aethernaut.
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.
- 8
Hourglass
Single-player alternative to Aethernaut — playable solo, no multiplayer required. Shares Indie and Adventure with Aethernaut.
In Hourglass you can create a time-clone of yourself to solve challenging puzzles. You will play as Aywa, a young adventurer who is traveling to Egypt to find her missing father - an archeologist, who never returned from his latest expedition.
- 9
Lightmatter
Single-player alternative to Aethernaut — playable solo, no multiplayer required. Shares Indie and Adventure with Aethernaut.
A first-person puzzler where shadows kill you. Watch your step or be swallowed by the darkness.
- 10
Tech Support: Error Unknown
Single-player alternative to Aethernaut — playable solo, no multiplayer required. Shares Indie and Adventure with Aethernaut.
Things are not what they seem at your new tech support specialist job. While resolving customer issues, you soon find yourself in the middle of a conspiracy. Will you side with your employer, join a rogue hacktivist group bent on destroying them, assist the police or stand alone?
- 11
Arelite Core
Single-player alternative to Aethernaut — playable solo, no multiplayer required. Shares Indie with Aethernaut.
The age of heroes is passed, yet an ancient evil rises again. Follow the adventures of Karden, a blacksmith on the path to mastering his craft, forced to take a stand against Talameq, an ageless entity bent on devouring the world.
- 12
Astral Traveler
Single-player alternative to Aethernaut — playable solo, no multiplayer required. Shares Indie with Aethernaut.
Blaze your way through 47 challenging tracks as you dodge obstacles at breakneck speeds, shooting down the enemy raiders blocking your path and phasing through pulsars for an extra burst of speed. Your astral core is fading, but the warp gate to the next track is just up ahead, if your skills are tight enough to reach it.
- 13
Wordish
Single-player alternative to Aethernaut — playable solo, no multiplayer required. Shares Indie with Aethernaut.
Wordish takes word games to the next level! Find the proper words in this challenging and customizable puzzle game. Challenge your friends through codes or even with live multiplayer!