Answer first
Starting the trains in Big Walk is a tower-and-key world puzzle. Use the hint ladder below to reveal the route gradually; exact steps are reserved for Full solution.
Quick facts
| Item | Answer |
|---|---|
| Starting point | A tower-linked reward objective. |
| Required item | A key that must be prepared before its final use. |
| Exact route | Reveal the staged hints below. |
| What happens next | Three trains begin looping around the track. |
Spoiler-free hint
Look upward for the objective that begins the activation sequence. You only need to identify the tower linked to the railway at this stage.
Stronger hint
At the top of the Blue Tower is a console that will not release the key until it has received five puzzle rewards. The key still needs one more preparation step before it fits its final destination.
Full solution
Reveal the complete train activation route
Full spoiler: Put five puzzle rewards into the Blue Tower's top console to receive the train key. Pass the key through the key cutters, then take it to the key slot at the main station or terminus. Inserting it starts the three trains on their loop.
Step-by-step walkthrough
- Reach the top of the Blue Tower and find its console.
- Supply the console with five puzzle rewards; it releases the train key.
- Take the key through the key cutters to trim it.
- Bring the trimmed key to the key slot at the main station or terminus.
- Use the key in the slot. Three trains will begin circulating around the rail loop.
Common mistakes and fixes
| Problem | What to check |
|---|---|
| The train is still not moving | Confirm that you have completed the whole chain: Blue Tower console, five rewards, key cutters, then the station key slot. |
| You are searching the station for the first key | Go to the Blue Tower first; the key is released by its top console. |
| The key will not complete the route | Make sure it has been through the key cutters before you try the main-station/terminus slot. |
| You are waiting for a train-control answer | This guide only covers verified activation steps. It does not publish unconfirmed carriage-control instructions. |
Frequently asked questions
How many puzzle rewards do I need for the Big Walk train?
You need five puzzle rewards at the Blue Tower console before it releases the train key.
Where do I use the train key?
After taking it through the key cutters, use the key in the slot at the main station or terminus.
Why are the trains not moving in Big Walk?
They start after the Blue Tower key route is completed: five rewards at the tower console, the key cutters, and the main-station/terminus key slot.
Which five puzzles should I complete?
The verified route confirms that the console requires five puzzle rewards. It does not yet establish a mandatory or interchangeable set of individual puzzles, so this page does not recommend a specific five-puzzle route.
Can I stop or steer a train?
This page does not give a control procedure because the available evidence has not independently confirmed how stopping or steering works.