Linked rooms (one-way information chain)
Also searched as: Locked Yellow Room / chained rooms
The short answer
Each player is locked in a different room and sees only one tile of the full sequence. Information flows one way only: room 1 can talk to room 2, room 2 to room 3, and so on. The sequence travels down the chain, and at the end everybody submits at the same moment.
- Players
- 3 players or more (the longer the chain, the harder)
- Time
- 20-35 minutes
- Location
- Blue tower area (no verified coordinate for this area, see Sources)
- Reward
- 1 blue tower part
The longer the chain, the more distortion - every retelling adds error, so four players is noticeably harder than three.
Before you start
- 3 players or more; the chain is as long as the player count, so more people is harder here
- Radios
Step-by-step 3 steps
- 1
Work out which way the chain runs
Run one test transmission from each end before anything else: whoever can pass the message onward to the next room is upstream. That establishes the order - and your position in it.
Schematic: the one-way information chain of the linked rooms. Each player sees one tile of the sequence, information travels down the chain in one direction only, and at the end everybody submits at once. - 2
Build the sequence along the chain
Start at one end and pass each observation down the chain toward the other - nobody can hand over a physical tile while locked in, so the only thing that moves is information. When you transmit, pass the raw observation only - shape plus position number - never your inference.
Faster: "I think it is the third" fails, because you may be counting from opposite ends. Say "third from the top, round" and nothing more.
- 3
Everyone submits the full sequence together
Once the assembled sequence is complete, everybody submits at the same instant.
Faster: Count down over the radio (three, two, one, submit) and press together.
Where it goes wrong
These are the places players actually get stuck most often. Working through them in order usually finds the cause.
Other Blue tower puzzles
After finishing: 1 blue tower part.
Where this solution came from
games.gg's Chinese guide documents the full mechanic: each player locked in a different room, each shown one tile of the sequence, information flowing one way, and a simultaneous submission at the end.
Puzzles in this game are not assigned in a fixed order: each tower needs a set number of gourds and has more challenges around it than that, so you choose which ones to clear, in any order. That is why two guides list different puzzle line-ups for the same tower — neither is wrong. Unless a coordinate is credited to a named source it is a community measurement, and later versions can shift it; once you are in the area, trust the landmark over the number.