Transport Fever 3 mod.io Auth Code: Link Your Account Step by Step

Why is the game asking for an auth code?

The in-game mod hub talks to mod.io's backend, and mod.io's standard account-linking flow uses a short display code instead of asking you to type a password into a console or game UI. You generate the code inside the game, enter it on the mod.io website in a regular browser, and the two ends pair securely. The result: one mod.io account that remembers your installed mods whether you are on PC, PS5, or Xbox — the same cross-platform promise that made the series switch from Steam Workshop in the first place.

How do you complete the linking flow?

The exact menu labels can vary slightly by platform and patch, but the flow is the standard mod.io pattern used across its catalog of games:

1. Open the game's mods section from the main menu.
2. Choose the account or link option — the game displays a short code.
3. On any device with a browser, go to mod.io and sign in (or create a free account).
4. Open the game-link page mod.io points you to and enter the code from the game screen.
5. Return to the game and confirm — your account is now connected.

What does linking actually give you?

Three things. Cross-platform library sync: subscriptions follow your account, so a mod you install on PC is waiting in your library on Xbox. Creator tools: following authors and managing your subscription list is far easier on mod.io's website than in a game menu. And future-proofing: if you add the game on another platform later, one login restores your whole mod setup — useful insurance given the console launch put PC and PlayStation/Xbox on the same catalog.

When linking fails

Codes expire quickly — if the site rejects yours, close and reopen the in-game link screen for a fresh one rather than retrying the old code. Sign into mod.io before opening the code entry page; expired browser sessions are the most common failure. Still stuck after that? Remove and re-add mods from the in-game hub instead of debugging the account — and if your actual problem is mods misbehaving after linking, the troubleshooting guide and the crash fix guide are the faster routes.