DrainSim
Steam News 24 February 20262mo ago

Pre Early Access Demo Update

With Early Access finally launching in just a few days on March 3rd 🥳, I’ve pushed a final demo update focused on polish, performance and overall feel in the demo levels: Tutorial Midtown Market This update doesn’t add…

Update log

Full DrainSim update

The complete published notes, normalized for clean reading and source attribution.

Extracted changes

3 fixes2 additions2 changes0 removals
  • Performance
  • Fixes
  • Workshop
  • Maps
  • UI and audio
addedWith Early Access finally launching in just a few days on March 3rd 🥳 , I’ve pushed a final demo update focused on polish, performance and overall feel in the demo levels: Tutorial Midtown Market This update doesn’t add more content, but it cleans up several things that were confusing, clunky, or rough around the edges.
fixedTutorial & onboardingThe tutorial flow has been fixed and smoothed out • The hydrant scenario has been replaced with a broken pipe in the basement , which better reflects how flooding situations work in the game • Overall progression through the tutorial is clearer and more consistent
changedGameplay feel & responsivenessTool interactions are more consistent • Actions register more clearly when clearing or scraping drains • Fewer cases where actions need to be repeated to take effect
addedToolsAdded the squeegee as a usable tool in the demo
changedUX & controlsSmoother interaction logic with tools, cables, and objects • Fewer awkward angles required to interact with things
fixedPerformance & stabilityReduced hitches during longer play sessions • Fixed several issues that could build up over time in the demo maps • Smoother performance overall

With Early Access finally launching in just a few days on March 3rd 🥳, I’ve pushed a final demo update focused on polish, performance and overall feel in the demo levels: Tutorial Midtown Market This update doesn’t add more content, but it cleans up several things that were confusing, clunky, or rough around the edges.

What’s improved

Tutorial & onboarding

• The tutorial flow has been fixed and smoothed out • The hydrant scenario has been replaced with a broken pipe in the basement, which better reflects how flooding situations work in the game • Overall progression through the tutorial is clearer and more consistent

Gameplay feel & responsiveness

• Tool interactions are more consistent • Actions register more clearly when clearing or scraping drains • Fewer cases where actions need to be repeated to take effect

Tools

• Added the squeegee as a usable tool in the demo

Water & physics behavior

• More stable and readable water flow in common demo situations • Fewer cases where water would stall or behave unpredictably • Better cause-and-effect when planning how to drain an area

UX & controls

• Smoother interaction logic with tools, cables, and objects • Fewer awkward angles required to interact with things

Performance & stability

• Reduced hitches during longer play sessions • Fixed several issues that could build up over time in the demo maps • Smoother performance overall

Visual & audio polish

• Fixed various small visual issues • Improved reliability of sound effects • Fewer immersion-breaking glitches

Note on download size

This update increases the demo size by about 2.5 GB. The main reason is additional PSO (shader) data and recooked assets after the polish pass. Unreal Engine doesn’t ship these incrementally, so even targeted changes can regenerate and include larger chunks of data. There’s no additional playable content included in the demo, just updated data to improve stability and reduce shader-related hitches. See you in Early Access.

Source

Steam News / 24 February 2026

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