- 200,000 Copies Sold! - 4 September 2026
DrainSim has sold over 200,000 copies! Thank you all so much for your continued support! The Level Editor is coming to the main branch soon!
- [Unstable Branch] DrainSim EA 0.4.0.00 - Level Editor Alpha - 13 August 2026
After a long wait, the Level Editor is finally here! You can find the Level Editor in the main menu. Create your own levels, test them directly in DrainSim and upload them to the Steam Workshop for others to play. The Level Editor is still in an early state, so expect some bugs and rough edges. Future updates to the editor may also break existing levels. If you want to get started, I put together a guide explaining the editor and how to create and upload your own levels: Level Editor Guide Patch notes:Added Level EditorFixed hose and cable collisionsFixed tutorial progression issues
- [Unstable Branch] DrainSim Level Editor (Alpha) - Getting Started - 13 August 2026
How to play other peoples creations:subscribe to a level you like on the workshopstart your game and go to your garageclick on the icon on the top left click on workshop How to use the Editor: Water simulation settings and minimap capture. next to that shows the water height of the currently selected measure volumeAdd or remove mesh collision from the water simulation.Voxel dirt editing tools.Content Browser. Add meshes from here.Outliner. Shows all actors and meshes in the level.Details panel. Edit the selected actor here.Upload your level or update an existing Workshop submission. After a long wait, the Level Editor is finally here. You can find the Level Editor in the main menu.The Level Editor is still in an early development state, so there may still be some bugs. Future updates may also break existing map submissions.When you open the editor, the essential DrainSim actors and tool…
- DrainSim EA 0.3.1.12 - Construction Site Balancing Update - 6 June 2026
Improved Construction Site balance and progression Adjusted water inflow, drainage layout and water behavior Improved terrain shaping, slopes and pit layouts to better guide water flow Improved visibility of drainage progress in key areas Increased bucket capacity by 50% Made climbing and vaulting out of water easier Fixed water height savegames Fixed voxel savegames on Convenience Store and Parking Garage Fixed missing mud on Convenience Store Fixed cable height detection Construction Site: removed terrain spikes and visual issues Various Construction Site gameplay, collision and drainage improvements
- Hotfix DrainSim EA 0.3.1.07 - 4 June 2026
Fixed voxel savegames on Convenience Store and Parking Garage Fixed missing mud on Convenience Store I know the new level is a hard one, it would be better for the games development if you keep that feedback to the discussion hub or the discord instead of reviewing the game negatively instantly out of frustration. I will see how people adjust to the new digging mechanic over the next few days and balance the new level from there.
- 0.3.1.06 hotfix - 3 June 2026
DrainSim EA 0.3.1.06 Fixed cable height detection
- Muddy Mess Update - 3 June 2026
DrainSim EA 0.3.1.05 - Muddy Mess Update Finally giving the bucket a proper purpose. This update introduces the new digging and placing mechanic. Hold more buckets in your toolbar to fill them with dirt while digging, then place the dirt again by right-clicking. Redirect water however you want and experiment with different solutions. This update also adds the new Construction Site level, built around deeper flooding and the new digging gameplay systems. Added new level - Construction Site Added digging and placing mechanic Buckets can now be filled with dirt while digging Added digging mechanic hints and updated tutorial support Added separate options for time challenges and leaderboards Improved water interaction and water simulation stability Improved hose and power cable navigation and placement Improved navmesh and water measure performance Improved exiting water movement behavior A…
- NEW LEVEL: Construction Site [UNSTABLE] - 16 May 2026
DrainSim EA 0.3.0.00 NEW LEVEL: Construction Site Fitting to the new digging mechanic, this level features deeper water levels and more difficult flooding situations than previous missions. The level is still in a rough state, so feedback is very appreciated! Added new level – Construction Site Improved performance for water measure zones Fixed infinite dirt climbing Fixed dirt columns not being high enough when climbing with them Fixed infinite water sources on walls in Downtown Station Fixed water interaction on Industrial and Downtown Station
- Dig & Place Update Now on [Unstable Branch] - 8 May 2026
DrainSim EA 0.2.3.00 Added dig and place mechanic Buckets can now be filled with dirt Adjusted all existing levels to support the new digging mechanic Separate options for time challenge and leaderboards Improved navmesh performance on Farm Fixed tool thumbnails sometimes not appearing in toolbar Removed toolbar flicker when changing tool slots Fixed magnet fishing rope sometimes not loading properly Fixed missing garbage disposal objects on Downtown Station Buckets in the toolbar are automatically filled while digging. Tutorial adjustments for the new digging mechanic will follow. If you'd like to help test the new changes, you can join the unstable branch through the game's Steam Properties -> Betas tab.
- Leaderboard Cheat prevention - 2 May 2026
DrainSim EA 0.2.2.05 Updated leaderboard logic and improved cheat prevention Removed default trophy from garage Leaderboards now include basic anti-cheat measures. Invalid or impossible scores may be removed, and accounts may lose access to leaderboard submissions.
- Leaderboards & Trophy Update - 1 May 2026
DrainSim EA 0.2.2.03 – Leaderboards & Trophy Update Added leaderboards to the game, accessible in the completed missions UI in the garage Leaderboards reset each month Added leaderboard trophy shelf in the garage Trophies record the best placement you have ever achieved per level Current month trophies can still change until the month ends Downtown Station: adjusted water collision on overpass Downtown Station: added geometry behind overpass stairway to prevent dumping water outside the level Downtown Station: added stairs to middle platform Fixed tools disappearing when endscreen appears Removed some decal sprays due to trademark issues Fixed missing street in Industrial Improved performance in Parking Garage and Downtown Station Adjusted leaderboard UI layout and spacing Optimized leaderboard and trophy loading logic Added magnet fishing to leaderboards for consistency
- Welcome to Downtown Station - 23 April 2026
DrainSim EA 0.2.0.02 – Welcome to Downtown Station Added new level - Downtown Station Included multiple gameplay, collision, water flow and performance adjustments for the new level Adjusted hose placement grid positions Improved shader pre-compile logic for smoother gameplay I know these patch notes look short, but most of the new level changes have been summarized since a lot of iteration happened on the unstable branch.
- DrainSim -20% for a week - 17 April 2026
🥳quick heads up, put the game on sale for a bit good time to grab it if you’ve been waitingworking on a new level right now, wanted to have it ready for this but didn’t quite make it in time 😅 more updates soon
- DrainSim EA 0.1.7.06 – Performance, Generators & Voice Update - 13 April 2026
DrainSim EA 0.1.7.06 – Performance, Generators & Voice Update Added Generator MK2 Replaced AI voice with human voice (intro and radio) Added and improved translations across all languages (including Simplified Chinese fixes) Improved performance with CPU, RAM and VRAM optimizations Improved loading logic for more reliable initial water levels Improved performance in Convenience Store, Tutorial and Midtown Market Fixed water surface map not updating during canal breach and digging Improved overall water stability and initial water behavior Tool slot switching now selects a free slot automatically instead of dropping tools Improved hose and cable performance and handling Fixed higher tier tool spawn locations Fixed airborne pumps on level start Fixed mission board showing incorrect mission info when entering garage Fixed replay start time not resetting properly Fixed duplicate pipe water…
- stability patch for amd - 29 March 2026
DrainSim EA 0.1.6.11 Improved performance on Midtown Market Adjusted loading logic to reduce AMD crashes (may cause temporary water instability on first load - reloading fixes the issue) Fixed water clearing for vehicles to prevent standing waves Fixed voice settings not affecting audio Industrial: improved water collision, especially in service alley
- Big Demo Update – Tutorial improvements, Voice Over & Major Improvements - 29 March 2026
This is only a condensed list.This one’s for the demo. Steam doesn’t give me a separate place to post demo updates,so it’s going here: Major performance improvements and reduced VRAM usage Improved water simulation stability and fixed multiple infinite water source bugs Improved tool interaction logic and pickup behavior Holding mouse button now continuously uses tools (shovel, rake, squeegee) Improved cable, hose and pump connection logic Added failsafes to prevent broken water behavior when placing and removing equipment Improved savegame system including water height, tools and equipment states Fixed multiple bugs with pumps, hoses and inflatables not behaving correctly Improved replay system including rewards and endscreen feedback Disabled shop in magnet fishing levels for now Improved audio including water movement sounds and radio balancing Replaced radio voice with a human voice…
- Hotfix - 24 March 2026
DrainSim EA 0.1.6.10 Fixed extending hose from placed pump ignoring tier Fixed replaying a mission not resetting start time
- Gameplay Systems & Stability Update - 24 March 2026
DrainSim EA 0.1.6.09 Added new vehicles and vehicle shop Added Simplified Chinese and Swedish language support and improved localization Improved performance and reduced VRAM usage across multiple areas Fixed multiple savegame issues including water height, tool duplication and pipe states Improved overall water simulation stability and fixed various water source bugs Improved replay system including reward balancing and endscreen feedback Replaced radio voice with human voice actor and improved audio settings Improved tool and interaction systems including selling, weight handling and input behavior Fixed multiple collision and navigation issues across levels (especially Parking Garage, Farm and Church) Fixed crashes and stability issues including Linux Proton related problems Various UI improvements and bug fixes
- Where My Hose At? - 16 March 2026
This update focuses on hose interaction, placement, and usability improvements. DrainSim EA 0.1.5.05 Short interaction on inflatables now drags out a new hose Short interaction on pumps now drags out a new hose Adjusted barn water collision on Farm Fixed inflatable placement when placed inside bushes Fixed inflatables hovering after loading a savegame when placed too close to a wall Fixed hose attachable from pump even while a barrier is already inflating Fixed mouse view deadzone Fixed barrier inflow stopping after repeatedly adding and removing hoses Removed incorrect water collision boxes in the main Church room Fixed infinite pump water suction when looking into the sky while placing a hose Fixed interaction actors from original hose locations appearing when attaching barrier to pump Fixed barrier hoses being extractable from non-placed barriers Fixed infinite water sources when att…
- Quality of Life + Performance Update 0.1.5.0 - 14 March 2026
DrainSim EA 0.1.5.0 Pump can now connect to placed inflatables and vice versa Made rating system future-proof for upcoming updates Fixed some Church actors blocking water Fixed rating sometimes not awarding 5 stars correctly Fixed leaks sometimes teleporting the player to 0 0 0 Fixed double interaction issue Holding mouse button now continuously shovels, rakes, or squeegees Improved cable connection logic Fixed interaction bug on whiteboard Fixed broken meshes on Farm Fixed navigation at Parking Garage entrance Added a drain to Convenience Store street 2 area Updated navigation agent radius Fixed door collisions ignoring tools on Convenience Store (prevents door getting stuck) Added water movement to SFX audio Adjusted pump output Added pipes to minimap Fixed mesh on Parking Garage VRAM usage improvements Fixed broken pipe savegame issue Fixed stickdrift when not moving Decreased water…
