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Steam

Oneiro

Also known as Oneiro, o, oneiro

Utilize skill, creativity, and knowledge to reach the depths of your mental labyrinth. By collecting and stacking items, gears, and weapons, you'll stand a chance against the brutal manifestations of your fears.

Last update
16 May 2026
Players now
0

Latest update

Update history

Browse past updates and patch notes for this game.

12 updates

Gallery

In-game media

Achievements

Community progression

Top picks from 42 Steam achievements, sorted by player unlock rates.

  • Friendly FireLure an enemy into another enemy's fire source, igniting them.80.3%
  • Poor ConstructionKill an enemy via collapsed ceiling77.0%
  • And that's when I realized...That wasn't no treasure, it was a gotdarn mimic!47.2%
  • ReflectionDefeat an enemy via an On Hurt item.46.4%
  • Labyrinth DeconstructionDisturb your Labyrinth by removing the core.43.9%
  • NREM 1Defeat Terror; and begin drifting off into your next Layer.34.2%