Black Tower
A tall dark tower · the Ending Key · challenges of its own
The tower is where the Ending Key sits, and it keeps its own challenge list. Getting the key is tower work, not sphere work.
Open the Black Tower guideFinal Gauntlet · 7 sequential rooms
Big Walk Black Sphere Puzzle Guide
The Black Sphere holds the seven final rooms, and they only open in order. Find the one you are standing in, clear it, and the next door opens behind you.
- Location:
- Late-game · Black Sphere
- Structure:
- 7 sequential rooms
- Type:
- Co-op progression
- Before:
- Black Tower
- After:
- Ending Gate
Black Sphere status:Locked0 / 7 rooms marked on this deviceOpen room: Room 1 — Peg Board Room
⚠ Room names and recognition clues stay visible. Exact steps stay hidden until you ask for them.
Black Tower or Black Sphere?
Two late-game places that get the same nickname. Check what is in front of you before you travel.
Black Sphere
A huge dark sphere · stacked rooms inside · late-game co-op
A giant sphere with the seven final rooms layered inside it. If the dark thing you can see is round and you have been doing late-game co-op, you are in the right place.
You are in the right place
Heard it called the black building or the black place? Players use both names for either one, so trust what you see over the name you remember.
Which Black Sphere Room Are You In?
You do not need a room number. Pick the thing you can actually see, and the page points at that room.
What is the main thing you see?
The Seven Rooms In Order
Every room waits on the one before it. A shut door means the room you were in has not registered yet, and that is the only unlock rule here.
Black Sphere
- Black Sphere entrance
- Peg board · Room 1CURRENT
- Pointers · Room 2LOCKED
- Kick course · Room 3LOCKED
- Shared press · Room 4LOCKED
- Volley hallway · Room 5LOCKED
- Invisible room · Room 6LOCKED
- Sculpture · Room 7LOCKED
- Ending route
Next room to clear: Room 1 — Peg Board Room
Before You Start
Four habits cover every room in the sphere. Set them once, then take the rooms as you find them.
- Stay in the room until it registers. The next door stays shut until it does.
- Agree who does what before the room starts, not halfway through it.
- Watch the room, not the instructions — something visible changes when a room is done.
- Leave the last room's answer behind. Nothing carries over into the next room.
How much do you want shown?
Recognition stays on for every room, because that is how you work out where you are standing. The rest waits for you to ask.
One choice covers all seven rooms, and it stays set next time you visit.
Your world setting
Set it and the guidance stops assuming a different group size from yours. How each room behaves at another player count is not confirmed yet.
Communication changes here
These rooms lean on reading your team: pointing, moving on the same beat, and describing what only one of you can see. Talk about what is on screen now rather than what you remember doing.
Seven rooms, not the 45 challenges
The island challenges and the Black Sphere are separate content with separate counters. Progress in one never moves the other, so do not read this 7 as part of a 52.
45 island challenges7 Black Sphere rooms
Can't Reach the Black Sphere?
Getting inside is the late-game route itself. Black Tower challenges do not count toward it, so finishing them changes nothing down here.
- Reached Black TowerStill needed
- Ending Key and final route openStill needed
The first row marked "still needed" is the step in your way. Both rows done and still no way in? Walk the late route again from the tower.
Open the Black Tower guideRoom by Room
Each room reads the same way: is this yours, what it wants, how the team splits it, then as much hint as you asked for.
The 7 / 7 counter is kept on your device, not read from your game save.
One choice covers all seven rooms, and it stays set next time you visit. Room order and recognition clues last checked on 30 September 2026.
Peg board · Room 1
CURRENTPeg Board Room
Is this your room?
- Peg board / symbol board
- A board state to copy or finish
What this room wants
Finish the board the room starts you on. This is the room the sequence always opens first.
How the team splits it
Decide who reads the board and who acts on it. Only one player needs the whole picture.
How you know it worked
The board finishes and the next doorway becomes available.
Why the next room will not open
- The next room is still closed: the last board change never registered.
- The board was completed in a different order from the one the group agreed, so the final change was left half done.
Pointers · Room 2
LOCKEDPointer Room
Is this your room?
- Pointers / directions
- A reading the team has to interpret
What this room wants
Read the pointers and get what they say to the players who can act on it.
How the team splits it
Agree the reading order before anything moves. The pointers say what to do, not where to stand.
How you know it worked
The room registers the read and the next doorway becomes available.
Why the next room will not open
- The next room is still closed: the room never registered the final instruction.
- Two players acted on different readings of the same pointer, so nothing matched.
Kick course · Room 3
LOCKEDKick Course Room
Is this your room?
- Objects you can kick
- A course the team moves through
What this room wants
Get the whole team through the kick course that fills the room.
How the team splits it
Pick the order the group moves in before the first kick. A run only counts if everyone finishes it.
How you know it worked
The course registers as cleared and the next doorway becomes available.
Why the next room will not open
- The next room is still closed: the last section of the course was never crossed.
- A player left the course mid-run, so the run did not count.
Shared press · Room 4
LOCKEDShared Press Room
Is this your room?
- Buttons
- Inputs the team has to hold together
What this room wants
Get every required input active at the same moment.
How the team splits it
Everyone who can reach an input takes one. One player counts the group in, and nobody starts early.
How you know it worked
The inputs register together and the next doorway becomes available.
Why the next room will not open
- The next room is still closed: one input was released before the room finished.
- Everyone pressed, but not on the same beat, so the room never saw the inputs as active together.
- A player stepped off the input as it registered and cancelled the press.
Volley hallway · Room 5
LOCKEDVolley Hallway
Is this your room?
- A volley across a long hallway
- Something you send from one end to the other
What this room wants
Send the object the full length of the hallway without losing it.
How the team splits it
Put someone at the far end before the first attempt. The return trip is part of the same run.
How you know it worked
Do not treat this room as done just because you reached the far end. Wait until the next doorway is actually available.
Why the next room will not open
- The next room is still closed: the object stopped short and the hallway never registered.
- The far end was reached, the room was marked done, and the hallway had not finished.
Invisible room · Room 6
LOCKEDInvisible Room
Is this your room?
- A stretch you cannot read directly
- Invisible or hidden pieces
What this room wants
Work through the part of the room that is not visible to everyone at once.
How the team splits it
Split the work: one player keeps the route, the others describe what changes when something invisible is touched.
How you know it worked
The hidden stretch registers and the last room becomes available.
Two things use this name
Invisible final room or Invisible Ink?
Two different things use the invisible name. Inside the Black Sphere it is this room, the sixth of the seven. On an island tile challenge, invisible ink is the normal challenge.
Open Invisible InkWhy the next room will not open
- The last room is still closed: the hidden stretch was left before it registered.
- A step was repeated from memory instead of from what the room showed.
Sculpture · Room 7
LOCKEDSculpture Room
Is this your room?
- A sculpture or statue
- The last room before the exit
What this room wants
Finish the sculpture. This is the last tracked room before the Ending Gate.
How the team splits it
Agree the arrangement before anyone moves a piece. Rebuilding it is slower than agreeing once.
How you know it worked
The Black Sphere registers 7 / 7 and the route continues toward the Ending Gate.
Why the next room will not open
- This room finished but the Ending Gate is still closed: the gate has its own conditions, so this is not a Room 7 problem.
- The final arrangement was left incomplete, so the sphere never registered the seventh room.
Why Won't the Next Room Open?
Pick what is happening to you. Mid-sequence, the checks below are the room you are standing in right now.
Room you are in: Room 1 — Peg Board Room
Most likely blocker
The room you are in has not registered its completion yet, so the door after it is still shut.
What to check
- The next room is still closed: the last board change never registered.
- The board was completed in a different order from the one the group agreed, so the final change was left half done.
Next step
Go back into the room you just left, repeat its final step the whole way through, and watch the room rather than the door.
Black Sphere Complete
Seven rooms is the end of the sphere. It is not the end of the game, and it is not the ending itself.
0 / 7 Black Sphere rooms cleared
The Ending Gate keeps its own conditions. Clearing every room here does not open it on its own.
Black Sphere Questions
- Where is the Black Sphere?
- On the late-game route, past Black Tower and before the Ending Gate. It is a sphere you walk into, not a landmark you look at from the outside. Black Tower guide
- Is the Black Sphere the same as Black Tower?
- No. They are two separate late-game places, and the tower comes first. The tower is where the Ending Key sits; the sphere is the seven-room stretch after it.
- How many Black Sphere puzzles are there?
- Seven, and they run in a fixed order rather than as a set you can pick from. Seven is the number the sphere counts, separate from the 45 island challenges.
- Which Black Sphere room am I in?
- Match the room by what you can see, not by a number the game never shows you. Find my room
- Why won't the next room open?
- The room before it has not registered yet. Go back into the room you just left, finish the last part of it in one pass, and look for a visible change before you try the door again. Check the room you are in
- Does player count change the final rooms?
- Not confirmed yet — feedback welcome. Rounds exist for different world settings, so if a room looks nothing like what the guide describes, check the setting your run was created with first.
- What happens after the seventh room?
- The route continues to the Ending Gate, which has its own conditions. The ending itself is a separate guide. Ending Guide
Also known as: Black Sphere · black sphere puzzles · sphere puzzles · black ball · black globe · big black sphere · final sphere · ending sphere · final seven puzzles · seven final rooms · seven rooms · 7 rooms · final rooms · ending rooms · final puzzles · ending puzzles · final chamber · final co-op rooms · final gauntlet · black building · black place · last black area