About the Game
Campaign
Explore the new Open World Campaign with a dozen worlds and 100+ new levels. Jumps, Hydraulics, ‘Normal’ Bridges, and more giving you hours of gameplay to enjoy! Take a flying leap in Vaulting Towers or flex those hydraulic muscles in Bifrost Bend!Sandbox
Let your engineering creativity flow with no restrictions in Sandbox mode, allowing you to push your bridge building skills to the limit. Challenge your friends and the community by designing intricate levels and publish them online for everyone to enjoy.Community
Explore virtually infinite content and challenges designed by the community in the Steam Workshop. See what bridge designs other players come up with and show off your own in the Gallery. Challenge yourself and others by competing for the top spots in the cut-throat leaderboards and histograms.Custom Physics
Our custom physics engine gives total control, reliability, and accuracy to your bridges. Sleep easy at night knowing your bridges will perform consistently every time!Customization
- Mods
Mods allow you to customize your game to suit your tastes. Modify the game’s settings, include new options, change vehicle or material defaults, translate your game with player supported language packs, and more! - Decorate
Add visual flair to your level with a whole range of decor objects. Alongside generic items (traffic cone, rocks, hot air balloons, etc.), each new biome comes with a set of themed decorations as well. Paint a happy little scene, there are no limits here. - User Generated Content
Create your own vehicles, boats, planes, decorations, and textured custom shapes to add to workshop levels. Let your imagination soar! Share them with the community and download things made by other players.
Loads of new features
- Build Zones
It’s time to think inside the box! You can only build within their borders, like a reverse boat or plane. Are you up to the challenge? - Pre-Built Materials
Showing is much more effective than telling. Pre-Built materials can be included with a level on loading, giving you a helping hand or another obstacle to overcome. Work around them or incorporate them into your bridge designs. - New Material: Foundation
Support long bridges with a strong foundation, or two! Expensive yet very effective at reducing stress in key positions.
Screenshots
6 images
Version Information
Steam Patch Notes
Official update history
Poly Bridge 3 Small Update
Twitch Integration: The native Twitch integration feature has been retired. Due to low overall usage, the server infrastructure costs required to host and maintain this service are no longer sustainable.
We want to thank the community members and streamers who engaged with this feature during its run!
This small patch fixes an issue with the Weekly Challenges thumbnail not appearing when in the last 24 hours of the countdown.
Thank you for playing Poly Bridge 3!
This update rebuilds Poly Bridge 3 using the latest version of the Unity engine. It addresses underlying security vulnerabilities and ensures continued compatibility and stability.
No gameplay or content changes are included in this update.
Patch 1.5.8 is a small hotfix to fix a regression introduced in 1.5.7
Use grey color to indicate disabled nodes and pistons in the Hydraulic Controller (was using green)
Build Mode
* Added support for constraining node/foundation movement to X or Y axis. Default bindings are N (Constrain to X Axis) and M (Constrain to Y Axis)
* Grid now draws in front of custom shapes and vehicles
* Fixed hydraulics not working after cut and double undo
* Fixed issue with clipboard changing in some undo cases
* Fixed issue with split joints not being reset when attached to prebuilds
* Fixed issue with custom shape outline width changing
Trace Tool
* Added 'Snap Tangents' option (default=U)
* Change minimum length for Trace Fill to 0.5m (was 1m)
* Draw traceline over vehicles
* Highlight tangent handles on hover
* Always allow Fill if traceline is visible
* Allow changing trace shape and tangents lock/snap when traceline not present
Sandbox
* Added support for re-ordering checkpoints
* Added support for converting an anchor to a node ("Convert To Node" button in anchor properties)
* Added skins for UFO vehicle
* Fixed issue with Quicksave (F6) for files in subdirectories
* Fixed UI overlap in Sandbox with Event Editor and Selection panel
Workshop
* Added "Played by me" filter for Workshop Levels and Campaigns
* Added ability to Search when filtering by "Subscribed by me", "Favorited by me" and "Created by me"
* Added info icon for Workshop Item slots to provide author/date info on hover
* Number tutorials in Workshop Campaigns if there is more than one
* Fixed issue with number of levels sometimes being incorrect for Workshop Campaigns
Gallery:
* Fixed issue with "Include Cheats" and "Wins Only" filters not always working correctly.
* Don't change gallery filters when gallery invoked from Help Icon
* Remove pre-patch replay from Curated Gallery
UI
* Show Campaign Progress on Campaign UI
* Use YYYY-MM-DD date format for Japanese/Chinese/Korean languages
* Fixed issues with Replay popup
* Fixed artifact on rope/cable icons due to compression
Mods
* Automatically download mods for Custom Shape Textures and Vehicle Skins when used by level
Main Menu
* Added Main Menu shortcuts (R = load last sandbox level, C = load last campaign level)
* Fixed issue with zoom sometimes changing on Main Menu
Simulation
* Added new split joint meshes (no longer using PB2-era split joint meshes)
* Added "UI Scale Mode" and "UI Scale Factor" to Graphics Options
* New hotkey (default=T) will show tooltips for all on-screen hydraulics, springs and foundations
* Trace tool UI/UX improvements
* Hydraulics and springs can be adjusted continuously by holding down the nudge keys ([ and ]).
* Shrink tooltip size if not running on Steam Deck
* Added mod hooks to get the UI Scale Mode and UI Scale Factor.
Thank you for playing Poly Bridge 3!
* Added Discord Rich Presence
* Fixed issue with workshop replays not appearing after beating level
* Fixed issue with clipboard having split joints modified (uncommon)
* Only auto-adjust split joints after flip-paste if 2 edges are connected to split joint
Thank you for playing Poly Bridge 3!
* Added Refresh button to My Rankings
* Fixed issue with trace lock getting disabled when switching materials
* Fixed nodes sometimes shifting when trying to move them
* Fixed missing Campaign subtitle for Workshop Campaigns
* Improvements to ModApi related SetCamera functions
* Replay camera performance improvements
Thank you for playing Poly Bridge 3!
Bug Fixes
* Fixed issue with split joints not flashing yellow when connecting
* Fixed issue with incorrect weekly sometimes being selected from dropdown menu
* Disable Vehicle Follow camera in tutorials
Thank you for playing Poly Bridge 3!
Improvements
* Overhaul of Follow Vehicle camera mode to improve its function and ease of use
* Support for automatically including active gameplay mods (that normally trigger cheat flag) in workshop levels
* Only show world progress bars in Gold if all levels are beat under budget and unbreaking
* Allow Pause during camera transition between Build and Simulation modes
* Added button to copy replay video URL to clipboard
* Don't draw auto-triangulate lines when edge bisect will occur on placement
* Unity engine upgrade
Bug Fixes
* Fixed crash that could occur with levels containing UGC content
* Fixed issue with incorrect collision for rotated UGC vehicles
* Fixed issue with Unlimited Budget/Material cheats not working for Workshop levels
* Fixed Undo issue with split joints and Hydraulic Controller
* Fixed issue with long timelines not showing horizontal scrollbar in Hydraulic Controller and Level Info UI
* Minor UI fixes
Thank you for playing Poly Bridge 3!
* Fixed issue with physics warning continuing to show for updated autosaves
* Fixed issue with one main menu level failing sim
Thank you for playing Poly Bridge 3!
* Fixed custom shape acceleration issue in RMT-10.
* Fixed RB-08 prebuilds not being in correct place for older saves.
* Added "Custom Resolution" option in Graphics. This allows the game resolution to be persistent after resizing the window using the mouse.
* Fixed issue with not being able to add more than 12 worlds in a workshop campaign.
* Fixed UI issue when there are 16 levels in a workshop campaign.
Thanks for playing Poly Bridge 3!
Current Release
Build 23940259
Uploaded Jul 15, 2026
System Requirements
How to Install
Poly Bridge 3.exe to play
Troubleshooting tips
• Run Redist/_CommonRedist installers if game won't start
• Add folder to Windows Defender exclusions
• Run as administrator
Download
Direct link available
963 MB
23940259
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View AllDownload Poly Bridge 3 for PC with a direct link or via torrent. Get the full version of Poly Bridge 3 for free. Poly Bridge 3 is a Simulation released by Dry Cactus.