Single-player games like The UNDA Legacy
Below are 8 single-player Steam games similar to The UNDA Legacy, 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 The UNDA Legacy page.
Ranked picks
- 1

Project Enceladus
Single-player alternative to The UNDA Legacy — playable solo, no multiplayer required. Shares Indie and Adventure with The UNDA Legacy.
A first-person puzzle-platformer investigation where you explore the fragmented mind of a murderer to uncover the truth behind a tragic space station massacre.
- 2

Memory's Reach
Single-player alternative to The UNDA Legacy — playable solo, no multiplayer required. Shares Indie and Adventure with The UNDA Legacy.
Memory’s Reach is a first person puzzle based metroidvania. Explore a huge, interconnected world of labyrinthian megastructures filled with alluring mysteries. Solve challenging puzzles, acquire powerful abilities, and uncover forgotten lore as you seek to reveal the legacy of a doomed civilization.
- 3

SECTOR ZERO
Single-player alternative to The UNDA Legacy — playable solo, no multiplayer required. Shares Indie and Adventure with The UNDA Legacy.
SECTOR ZERO is a short, physics-based dark sci-fi puzzle adventure where you play as a fragment of an ancient hive-mind entity, awakened by mining operations deep within Asteroid 2031 XT.
- 4

Schrodinger's Cat Burglar
Single-player alternative to The UNDA Legacy — playable solo, no multiplayer required. Shares Indie and Adventure with The UNDA Legacy.
Portal with cats - Become entangled in a quantum puzzle adventure! Mittens gains the incredible power to be in two places at once. Explore twisted test chambers, make mischief and evade capture by a whisker! 🐈🐈⬛
- 5

The Darkest Files
Single-player alternative to The UNDA Legacy — playable solo, no multiplayer required. Shares Indie and Adventure with The UNDA Legacy.
Germany, 1956. The war is over, but justice is not served. Former Nazis walk free, while their victims lie in unmarked graves. As a prosecutor, you'll unearth long-buried evidence, confront witnesses and hunt down perpetrators. Will you have the courage to bring these "ordinary men" to court?
- 6

Scene Investigators
Single-player alternative to The UNDA Legacy — playable solo, no multiplayer required. Shares Indie and Adventure with The UNDA Legacy.
Scene Investigators is a hardcore deductive reasoning game for fans of the "true crime" genre. Step into re-created crime scenes, observe closely for pieces of evidence, analyze possible motives behind the crimes, and uncover what truly happened.
- 7

The Last Clockwinder
Single-player alternative to The UNDA Legacy — playable solo, no multiplayer required. Shares Indie and Adventure with The UNDA Legacy.
A VR puzzle-automation game. Create intricate clockwork contraptions out of your own clones and restore life to an ancient tree using automation, a collection of rare plants from across the galaxy and a team of clockwork gardeners.
- 8

Supraworld
Single-player alternative to The UNDA Legacy — playable solo, no multiplayer required. Shares Indie and Adventure with The UNDA Legacy.
Zero hand-holding. Dismantle this dense open-world of unconventional puzzles by thinking outside the box and exploiting every ability you discover. Solve mysteries hidden in plain sight where every piece of supposed decoration has a purpose.