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Steam News27 February 20264mo ago

Oneirium Early Demo Patch Notes v19.0.0.27 (Steam Deck supported)

Demo Patch Notes v19.0.0.27 Steam Deck is now supported! Sanity Scar System Replaced the corpse run system with Sanity Scars On death, your Sanity cap is reduced by a small amount (e.g.

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Full notes

Full Oneirium update

Read the full published notes in a cleaner layout. The original post stays linked below.

What changed

12 fixes22 additions21 changes0 removals
  • Gameplay
  • Maps
  • Performance
  • UI and audio
  • Fixes
  • Balance
changedSteam Deck is now supported!On death, your Sanity cap is reduced by a small amount (e.g. 100 to 90) instead of losing currency
changedSteam Deck is now supported!Death marker now appears on the world map with a sonar effect to help locate it
addedSteam Deck is now supported!Added cinematic Finishing Blow sequence when defeating bosses
changedSteam Deck is now supported!Features a stylized ASTRAL background with silhouette rendering of the player and boss
changedSteam Deck is now supported!Includes afterimage effects, camera work, and audio
addedSteam Deck is now supported!Added a new voiced prologue cutscene that plays at the start of the game

Oneirium changes

changedOn death, your Sanity cap is reduced by a small amount (e.g. 100 to 90) instead of losing currency
changedDeath marker now appears on the world map with a sonar effect to help locate it
addedAdded cinematic Finishing Blow sequence when defeating bosses
changedFeatures a stylized ASTRAL background with silhouette rendering of the player and boss
changedIncludes afterimage effects, camera work, and audio

Demo Patch Notes v19.0.0.27

Steam Deck is now supported!

Sanity Scar System

  • Replaced the corpse run system with Sanity Scars

  • On death, your Sanity cap is reduced by a small amount (e.g. 100 to 90) instead of losing currency

  • Retrieving your Sanity Scar grants a Sanity tier buff, rewarding persistence rather than punishing failure

  • Death marker now appears on the world map with a sonar effect to help locate it

Boss Finishing Blow

  • Added cinematic Finishing Blow sequence when defeating bosses

  • Features a stylized ASTRAL background with silhouette rendering of the player and boss

  • Includes afterimage effects, camera work, and audio

Prologue Cutscene

  • Added a new voiced prologue cutscene that plays at the start of the game

  • Hold to skip for cutscenes that allow skipping, normal in-engine cutscenes are still one-press

Combat Improvements

  • Reworked Arcane class with buffs for a more unique and satisfying playstyle

  • Added combo input grace window for smoother attack chains

  • Added melee hit effects and improved hit feedback

  • Added hit flash and hit stop on enemy body contact

  • Improved parry timing and cooldowns

  • Fixed parry displacement issues

  • Added status effect flashes on hit

  • Adjusted camera shake intensities

Movement and Controls

  • Added run acceleration and deceleration for smoother movement

  • Added WASD keyboard preset with toggle in settings

  • Added D-Pad movement mode as an alternative to analog stick (controller)

  • Added D-Pad navigation mode for menus

  • Swapped controller trigger and shoulder bindings

  • Fixed PS4, Xbox, and other controller button display translations

  • Allow inventory access while on ladder

  • Allow ladder look-up attacks (climbing freezes during attack)

  • Snap player to nearest ledge edge when hanging

Reality Shift

  • Reality Shift now triggers automatically for a more seamless world-building experience

World Map

  • Added animated key icons

  • Death marker with sonar effect to locate Sanity Scars

  • Per-region map discovery tracking

UI Improvements

  • Reworked Flask allocation UI with intuitive controls

  • Added quantity selection for multi-item use

  • Added animated bonfire cursor

  • Added description mode to weapon upgrade menu

  • Improved boss banners and NPC notifications

  • Battle messages now render as overlay above effects

  • Added early preview notice and version panel

  • Restore last-used save slot when showing save UI

  • Use colored text for point displays in menus

Misc.

  • Added Dummy enemy at the beginning of the demo

  • Added ShakeTile platforms that fade and collapse

  • Traps now flash red when detected (Trap Detection passive)

NPCs

  • Added close prompt when talking to NPCs

  • Enemies are now skipped/paused during NPC conversations

  • Reworked NPC chatbox display

Bosses

  • Vicaris, The Unsainted: Updated stats, loot, and quest text

    Added breather system, intro sequence, blast reflect mechanic, ghoul spawn fixes, and balance adjustments

Settings

  • Added Reduce Sanity FX toggle for players sensitive to visual effects

Level Fixes

  • Fixed issues in Ashen Crucible

  • Fixed issues in Crawl Of The Penitent

  • Fixed moving platform collision handling

  • Fixed ladder auto-snap clipping at ceilings

Bug Fixes

  • Fixed animation bug with cutscenes causing gameplay animation issues

  • Fixed reflected energy balls re-homing on player

  • Fixed energy ball phase detection and sound

  • Fixed hit/knockback desync issues

  • Fixed hotbar bind triggering while confirm dialogs are active

  • Fixed negative rectangle dimensions in collision detection

  • Block jump-down while attacking

  • Reset slash effect when starting new game

Balance Changes

  • Restorable health adjusted

  • Skill mana costs reduced

  • Voidrend is now a passive backstep proc

  • Toned down dreamy overlay effects

  • Added cooldown for enemy body contact damage

  • Various boss stat tweaks

Source

Steam News / 27 February 2026

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