Updated: August 8, 2026 
If you're trying to unlock the Big Walk Blue Tower Key, you'll first need to complete all five Big Walk Blue Tower puzzles scattered around the area. Each puzzle rewards you with a unique collectible, and once you've gathered all five, you'll be able to unlock the Blue Tower Key and activate the nearby train. This Big Walk guide explains every puzzle step by step so you can complete the Blue Tower and unlock the train.
How the Blue Tower Works in Big Walk
Before you start solving the Big Walk Blue Tower puzzles, it's worth understanding how the tower progression works.
To unlock the Big Walk Blue Tower Key, you'll need to:
- Complete all five Blue Tower puzzles.
- Collect the reward from each puzzle.
- Place all five collectibles on top of the Blue Tower.
- Receive the Blue Tower Key.
- Cut the key using the nearby key cutters.
- Take the finished key to the nearby train station to activate the rail car.
If you're collecting every collectible in the game, don't forget to check our collectible guide after finishing these puzzles.
All Big Walk Blue Tower Puzzles
| Puzzle | Players Needed | Difficulty |
|---|---|---|
| Heavy Ball | 2+ | Easy |
| Locked Yellow Room | 4 | Hard |
| Scaffold House | 2 | Medium |
| Color Tile | 2 | Medium |
| Beach Tower | 2 | Easy |
If you're planning to tackle these Big Walk Blue Tower puzzles with friends, our multiplayer guide explains how online co-op works, while the group size guide covers the maximum number of players you can bring.
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Big Walk Blue Tower Puzzle 1: Heavy Ball
The Heavy Ball is usually the first of the Big Walk Blue Tower puzzles that players discover.
You'll find it by unlocking the door to the left of the map house and following the path until you reach the large heavy ball.
How to Solve the Heavy Ball Puzzle
The objective is simple: move the heavy ball onto the pedestal.
However, there's one catch. You can't walk while carrying the ball.
Solution
- Pick up the heavy ball.
- Throw or hand it to your teammate.
- Walk ahead to a new position.
- Receive the ball back.
- Repeat this process until you reach the pedestal.
- Place the ball on the pedestal to complete the puzzle and collect the collectible.
Quick Tips
- At least two players are required.
- Don't try carrying the ball alone; you won't be able to move.
- Stay fairly close to each other to avoid dropping the ball too far away.
Big Walk Blue Tower Puzzle 2: Locked Yellow Room
The Locked Yellow Room is easily one of the trickiest Big Walk Blue Tower puzzles because it relies entirely on communication instead of exploration.
Each player gets locked inside a separate room, and every room only reveals part of the solution.
How to Solve the Locked Yellow Room Puzzle
Every player can only communicate with the person in the next room.
The information flows like this:
Room 1 > Room 2 > Room 3 > Room 4
Each room reveals a single tile, and your goal is to pass that information from one player to the next until the complete pattern is known.
Solution
- Every player memorizes the tile shown inside their room.
- Pass the tile information to the next player.
- Continue until all four players know the complete sequence.
- Enter the full tile sequence together.
- Complete the puzzle to receive another collectible.
If your group struggles with communication-based challenges, these tips and tricks can make cooperative puzzles much easier.
Quick Tips
- This puzzle works best with four players.
- Describe tile shapes carefully instead of rushing.
- Double-check the final sequence before submitting it.
Big Walk Blue Tower Puzzle 3: Scaffold House
The Scaffold House is one of the more challenging Big Walk Blue Tower puzzles because it combines parkour with teamwork. You'll find this puzzle near the beach, and you'll need at least two players to complete it. Like the other Big Walk Blue Tower puzzles, finishing it rewards you with another collectible needed for the Blue Tower Key.
How to Solve the Scaffold House Puzzle
Start by helping your teammate climb over the main wall to unlock the entrance gate. Once inside, continue through the scaffold area until you reach the final platform, where you'll find a timer cannon.
Solution
- Boost one player over the main wall.
- Open the entrance gate for your teammate.
- Work together through the scaffold course until you reach the final platform.
- One player crosses to the opposite platform and stands beside the timer machine.
- The second player picks up the timer and throws it across the gap.
- Catch the timer and place it into the machine.
- Complete the puzzle and collect the collectible.
If you're having trouble navigating around the area, unlocking the map later in the game makes locating puzzle locations much easier.
Quick Tips
- Bring at least two players.
- Aim your timer throw carefully because it's easy to overshoot.
- Wait until your teammate is ready before throwing the timer.
- Missing the throw means you'll have to try again.
Big Walk Blue Tower Puzzle 4: Color Tile
The Color Tile Puzzle is another one of the Big Walk Blue Tower puzzles that focuses on communication instead of movement. Located to the left of the Scaffold House, this puzzle requires one player to observe tile markings while another helps recreate the correct pattern.
How to Solve the Color Tile Puzzle
Inside the room, you'll find several blank tiles and a telescope.
Your goal is to memorize the markings shown on the tiles before recreating the correct sequence outside the room.
Solution
- One player uses the telescope to inspect the tile markings.
- The second player holds and rotates the tiles so every marking can be seen clearly.
- Memorize every symbol before leaving the room.
- Close the door and head outside.
- Look at the pattern shown on the display panels.
- Recreate the same sequence using the tiles.
- Complete the puzzle to receive another collectible.
Like the Locked Yellow Room, this puzzle becomes much easier when your team communicates clearly. Following a few tips and tricks before starting can save plenty of trial and error.
Quick Tips
- Memorize the symbols before leaving the room.
- Let one player call out the sequence while the other places the tiles.
- Double-check the pattern before confirming your answer.
- Don't rush; the puzzle rewards accuracy more than speed.
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Big Walk Blue Tower Puzzle 5: Beach Tower
The Beach Tower is the final challenge among the Big Walk Blue Tower puzzles, and thankfully, it's also one of the easiest. Located near the Scaffold House Puzzle, this challenge is all about timing. Once you complete it, you'll earn the final collectible needed to unlock the Big Walk Blue Tower Key.
How to Solve the Beach Tower Puzzle
You'll find two pressure switches placed on separate rocks on either side of the Beach Tower. Since they're too far apart to activate alone, you'll need at least one teammate to press them at the exact same time.
Solution
- Locate both switches around the Beach Tower.
- Have one player stand at each switch.
- Use walkie-talkies or voice chat to count down together.
- Press both switches simultaneously.
- The puzzle completes, rewarding you with the final collectible.
Using walkie-talkies makes this puzzle much easier, especially if you're not using proximity voice chat.
Quick Tips
- Bring at least two players.
- Count down before pressing the switches.
- Use walkie-talkies for better timing.
- Make sure both buttons are pressed at exactly the same time.
How to Unlock the Big Walk Blue Tower Key
Once you've completed all five Big Walk Blue Tower puzzles, it's time to claim the Big Walk Blue Tower Key.
Head to the top of the Blue Tower and place all five collectibles into the empty slots. After placing the final collectible, the Blue Tower Key will appear.
Finish Cutting the Key
Like the other tower keys in Big Walk, the Blue Tower Key isn't ready to use immediately.
- Pick up the newly unlocked key.
- Use the nearby key cutters to shave it.
- Follow the marker to each remaining key cutter.
- Repeat the process until the key is fully cut.
If you've already completed another tower, this key-cutting sequence will feel familiar since every major tower follows a similar progression.
Activate the Rail Car
After cutting the Big Walk Blue Tower Key, head to the nearby train station.
Insert the completed key into the slot to activate the rail car, giving you another way to travel around the island.
Unlocking the rail car also makes exploring nearby regions much faster, especially if you're planning to tackle future tower puzzles or search for more collectibles hidden across the island.
If you're still working toward exploring every corner of the island, unlocking the map first can make finding the remaining towers and puzzle locations much easier.
Blue Tower Puzzle Rewards
Completing all Big Walk Blue Tower puzzles rewards you with:
| Reward | Description |
|---|---|
| Five Collectibles | One reward from each Blue Tower puzzle. |
| Blue Tower Key | Unlocks the nearby rail car after cutting the key. |
| Rail Car Access | Makes traveling around the island much faster. |
Blue Tower Tips
These Big Walk Blue Tower puzzles are much easier when your team prepares beforehand. While none of the puzzles are overly complicated on their own, good communication can save you a lot of time.
Bring Enough Players
- Most Big Walk Blue Tower puzzles require at least two players, while the Locked Yellow Room Puzzle works best with four.
- If you're playing with friends, understanding how multiplayer works beforehand can make coordinating much easier.
- Larger groups can also split up to locate puzzles faster before regrouping to complete them.
Carry the Right Items
- A pair of walkie-talkies makes the Beach Tower Puzzle much easier.
- Keep a backpack handy if you're planning to carry multiple world items while exploring.
- Communication tools become more valuable as you progress through different tower puzzles.
Unlock the Map First (Optional)
- While it's not required, unlocking the map makes finding every Big Walk Blue Tower puzzle much easier.
- The handheld map also helps you plan routes between puzzles without wandering around the island.
- If you've already unlocked it, keep it in your backpack before starting your Blue Tower run.
Work on One Puzzle at a Time
- Don't jump between multiple Big Walk Blue Tower puzzles.
- Finish one puzzle, collect its reward, and then move on to the next.
- This makes it much easier to keep track of which collectibles you've already earned.
FAQs
There are five Big Walk Blue Tower puzzles:
- Heavy Ball
- Locked Yellow Room
- Scaffold House
- Color Tile
- Beach Tower
- Completing all five rewards you with the Big Walk Blue Tower Key.
Not completely.
Several Big Walk Blue Tower puzzles require two or more players, while the Locked Yellow Room Puzzle is designed around four-player communication. Bringing friends is highly recommended if you want to finish the entire tower.
Completing every Big Walk Blue Tower puzzle rewards you with:
- Five puzzle collectibles.
- The Big Walk Blue Tower Key.
- Access to the nearby rail car after cutting and using the key.
For most players, the Locked Yellow Room Puzzle is the most difficult because it relies entirely on communication and memory. The Color Tile Puzzle can also be challenging if your team struggles to remember the tile patterns correctly.
Final Thoughts
Completing all Big Walk Blue Tower puzzles is well worth the effort. Besides unlocking the Big Walk Blue Tower Key, you'll also gain access to the rail car, making future exploration around the island much faster. Each puzzle tests a different skill, from teamwork and communication to parkour and memory, which keeps the Blue Tower progression fun from start to finish.
If you're aiming for 100% completion, don't stop here. There are plenty of other tower puzzles, collectibles, and secrets waiting to be discovered across the island. You can also explore our Big Walk Wiki for more walkthroughs, puzzle solutions, and gameplay guides to help you complete every challenge the game has to offer.
