Tunnel 4

Tunnels, underpasses and underground structures. Tunnel 4 is one of the more popular entries in our tunnel catalogue — the code listed above was pulled from the same dataset on the last sync, so it should match what is currently working in-game. Tunnel entries are typically large plug-ins. Pair with road / highway entries to build connected routes.

What is this cheat?

The Tunnel 4 code is pulled straight from the same upstream feed as every other Tunnel entry on this site, so if you see it listed here, it is in the dataset right now.

How does it work?

Bike Cheat Code does not modify the source game. We just publish the value that the game itself expects. That is why Tunnel 4 works without any additional downloads for typed codes.

How to use it

• Launch the source game, then look for the code-entry menu. On most source-game versions it sits in the phone or settings screen.
• Enter the code verbatim. Most Tunnel codes are case-insensitive but punctuation-sensitive.
• Confirm the entry. Most versions of the source game will play a confirmation sound and add the asset to your spawn menu.
• If the code is rejected, double-check the spelling, then restart the session. A clean reload usually fixes it.

Frequently Asked Questions

Where do I type the Tunnel 4 code?

Open the source game and find the cheat-code input field — usually inside the in-game phone or settings menu. The tunnel section's code field accepts the Tunnel 4 value directly.

The Tunnel 4 code does not work — what now?

Make sure you typed Tunnel 4 exactly as shown, with no extra spaces. Some games only accept tunnel codes after a fresh session — restart the game and try again if the entry is rejected.

Is the Tunnel 4 code case-sensitive?

Most in-game cheat codes — including Tunnel 4 — are case-insensitive. If the typed value is rejected, try it again in lowercase to rule out a capitalisation issue.