Dumb Ways to Build Room Code Guide
Sessions in Dumb Ways to Build are joined with a Room Code. This page covers the flow and the version-stamped issues around it.
How sessions work
Official material describes the co-op flow as: one player hosts, the group coordinates with a shared Room Code, and teammates enter that code to join the same job. This is the same pattern the crossplay guide describes for Steam + PS5 + Xbox cross-platform sessions.
Create and join flow
- Host — start a new co-op session from the main menu.
- Get the Room Code — the code is shown on the host's session screen.
- Share it — send the code to friends in your party (Steam friends, PlayStation or Xbox party, or platform chat).
- Join — friends select Join, enter the Room Code, and land in the same jobsite.
Known issue: duplicate Room Codes (fixed)
On launch day, hotfix 1.2.70 (Build 25236478) addressed a problem where the game could generate duplicate Room Codes. If you read older discussions describing a room code collision, note that this was fixed in that patch — always run the current build before troubleshooting.
If joining fails
- Make sure everyone is on the same platform generation (Steam, PS5, Xbox Series X|S) and the latest build.
- Check your platform's online service status and NAT/open ports for online multiplayer.
- Some China-region players reported connection and voice-chat issues in the 1.2.70 patch window — see Updates for the exact wording.
- If problems persist after the current build, check the official Discord for current known issues: discord.com/invite/dwtb
FAQ
Common questions about this topic.
How do I join friends in Dumb Ways to Build?
Host a session, share the Room Code shown on the host screen, and have friends enter it under Join.
Is the Room Code bug fixed?
The duplicate Room Code issue was fixed in hotfix 1.2.70 (Build 25236478, September 10, 2026).
Is Dumb Ways to Build crossplay with a Room Code?
Yes — cross-platform sessions between Steam, PS5 and Xbox Series X|S are joined the same way.
What should I do if the Room Code does not work?
Verify everyone is on the current build, check online service status, then consult the official Discord if it persists.