Big Walk Guide
語言
選單

Blue Tower route

Big Walk Blue Tower Walkthrough

Return five rewards, release the Blue Key, take it through all five cutters, then use the finished key at the Train.

  • Blue Tower → 5 cutters
  • Five ordered cutters
  • Destination: Train

Blue Tower route

Rewards
0 / 5 returned
Blue Key
Still locked
Key cutters
0 / 5 done
Train
Locked

Blue Area challenges0 / 5 complete

Exploration and 100% completion. This is separate from the Blue route above.

Check My Blue RouteShow the Blue Tower on Map

Your answers are saved on this device and shared with the Big Key guide, the Train guide and the 100% tracker.

Blue Tower Route at a Glance

One source, five ordered cutters and one destination. The Blue route ends at the Train plinth.

  1. Blue Tube LookoutYou are here
  2. Blue Key released
  3. Cutter 1
  4. Cutter 2
  5. Cutter 3
  6. Cutter 4
  7. Cutter 5
  8. Train

Whether the Train then moves is a separate check, so it is not drawn as the next step on this line.

你的藍色路線

回答你現在所在的位置，下一個藍色目標就會一直擺在你面前。

Where are you in the Blue route?

Pick the line that matches your run. The next Blue objective below follows your answer.

Route status

Blue Key released
0 / 5 cutters

Next Blue objective

Return the rewards the Blue Tower asks for and release the Blue Key.

The Blue Key is still inside the tower. Bring the rewards it asks for first.

Open the Big Key route

Where Is the Blue Tower?

Look for the blue tube-shaped tower standing over the open ground in the middle of the area. That tower is the Blue Tower.

The map below draws the Blue route: the Blue Tower source, its five key cutters and the Train plinth destination, with the Blue Area challenges underneath.

  • Blue route overlay
  • Blue Tower source
  • Five cutters
  • Train plinth destination
  • Blue Area challenges

Cutter 1

Cutter 2

Cutter 3

Cutter 4

Cutter 5

Train

Memory Bombs

Optical Telegraph

Trap Room

座標

視角計數

藍塔

火車

Blue Tube Lookout

The Blue Area around the tower holds its own challenges. Every other landmark sits on the full world map.

Open the Full Interactive Map

Return Five Rewards to the Blue Tower

The Blue Tower has five reward slots. Bring five challenge rewards back to the tower and it releases the Blue Key.

Where
Blue Tube Lookout
What it needs
5 challenge rewards

Rewards returned

0 / 5 returned

Need 5 more rewards.

The tower counts rewards, not challenge names, so any five valid rewards you carry back will do.

Solving a challenge and carrying its reward back are two separate marks. The slots fill from rewards you returned, not from solved challenges.

Show the Blue Tower on Map

Take the Blue Key Through Five Cutters

The released key still has to pass through five cutters, in order. Bring the current Blue Key to each one.

  • Cutter 1

    Next
    Location
    Blue route · cutter 1
    What to do
    Bring the current Blue Key here.
    After this
    Cutter 2

  • Cutter 2

    Not complete
    Location
    Blue route · cutter 2
    What to do
    Bring the current Blue Key here.
    After this
    Cutter 3

  • Cutter 3

    Not complete
    Location
    Blue route · cutter 3
    What to do
    Bring the current Blue Key here.
    After this
    Cutter 4

  • Cutter 4

    Not complete
    Location
    Blue route · cutter 4
    What to do
    Bring the current Blue Key here.
    After this
    Cutter 5

  • Cutter 5

    Not complete
    Location
    Blue route · cutter 5
    What to do
    Bring the current Blue Key here.
    After this
    The Train plinth

The cutters are ordered. A key that skipped one is not in its finished state, which is the usual reason the Train plinth stays dead.

Take the Finished Blue Key to the Train

The Blue route ends at the Train plinth. Place the finished key there and the Train gets one step closer to running.

  1. 5 cutters complete
  2. Finished Blue Key
  3. Train plinth
  4. Train running

What does the Blue Tower unlock?

  • • The Blue Tower route unlocks the island Train system.
  • • The finished key activates the Train plinth, which is how the Train becomes available at all.
Train:
Locked

The Blue route does not open the Chairlift, the Tunnels or the Map Room.

Fix the Train

Is the Train moving?

The key is at the plinth, so the Blue route is done. This last answer decides what you look at next.

Related achievement: Big Ride

Big Ride comes from boarding and riding the Train, not from unlocking it.

Open Big Ride Guide

Why Is the Train Locked or Still Stopped?

Work down the list. The first answer that matches your state is the thing that is still open.

The Blue Key was never released
The Blue Tower still wants its five rewards. Bring them back before looking at cutters. 歸還五份獎勵
I have the Blue Key, so where next?
Go to the first cutter that is not complete on the Blue route. The route stays on that cutter until it is done. 查找我的下一台切割機
I finished all five cutters
The key is finished now. Carry it to the Train plinth and place it there. 火車基座目的地
The key is at the plinth and the Train still will not move
This is no longer a Blue Tower problem. The Train has its own activation state to check, so continue with the Train guide. 火車不能用了？

Explore the Blue Area

Useful for exploration and completion. These sit apart from the Blue Tower route tracker above.

0 / 5 complete

5 challenges in the Blue Area

用於探索和 100% 完成度。這個進度條並不代表藍色路線。

A solved challenge is not a reward returned, so every entry has two marks. Only returned rewards fill the tower slots above.

Tracking full-game completion? Open the 100% Guide

Stuck on a Blue Area Puzzle?

Match what you are looking at to the challenge, then open the guide that solves it.

I found a number clue instead of a normal puzzle
Open 座標Where does the number point?
I see signals or tiles and cannot read the sequence
Open Optical TelegraphOpen Peg Tile Solver
I have to remember a sequence and keep failing it
Open Memory Bombs
We keep getting caught crossing the same room
Open Trap RoomOpen Peg Tile Solver
We have to agree on one count from a viewpoint
Open 視角計數

What Comes After the Blue Tower?

Once the Train is running, the Blue Tower route is complete.

The other major routes run side by side. Pick the system you want next, or let the progression assistant choose from your saved state.

Find My Next ObjectiveBig Walk Walkthrough

No coloured tower has to come before another one, so nothing needs the Blue route finished first.

Blue Tower Questions

How do I complete the Blue Tower in Big Walk?
Bring five challenge rewards back to the Blue Tower, take the released Blue Key through all five cutters in order, then place the finished key at the Train plinth. 路線一覽
What does the Blue Tower unlock?
The Train system. The finished Blue Key activates the Train plinth, and the Train is what the Blue route exists to open. 把做好的鑰匙帶到火車那裡
How many rewards does the Blue Tower need?
Five. The tower counts the rewards returned, not which challenges supplied them. 歸還五份獎勵
Do I need to complete every Blue Area puzzle?
No. Blue progression needs five returned rewards and the five cutters. The rest of the area is exploration and completion content. 藍色區域挑戰
Where does the Blue Key go?
Through all five cutters, then into the Train plinth. 火車基座目的地
Why is the Train not moving after I placed the Blue Key?
The Blue route is complete at that point. The Train has an operating state of its own beyond the key placement, so check the Train rather than repeating Blue Tower steps. 火車不能用了？
What should I do after the Blue Tower?
Blue ends at the Train. From there, pick another major route or let the assistant choose from your saved progress. 「接下來要做什麼」工具
Keep going: Big Walk Walkthrough →

Related Guides

Blue route shape and cutter order last checked on 30 September 2026.