Bus Traffic Fever Level 221 Guide: The Chain Sweep
The chain sweep is what separates Level 221 from the stages before it. Once you spot it and commit, the sequence becomes a short, repeatable loop — miss it and the level stalls halfway with no obvious fix.
The Chain Sweep in Level 221
This is the level where the chain sweep becomes the deciding skill. The layout is busier than the earlier stages, and sorting that chain sweep early is the thread that pulls the whole lot apart in order.
Step-by-Step Walkthrough
First Moves: Read the Queue
- Find the first bus in the chain sweep and send it.
- Let the slot empty before you touch the next bus.
- Line up the second bus while the first is still boarding.
Midgame: Follow the Queue
- Re-read the queue after the first bus boards.
- Confirm which color is now at the front.
- Line up the next matching bus while the slot empties.
Finishing: Clear the Level
- Send the remaining matching buses one at a time.
- Confirm every passenger group has boarded.
- Replay the opening once so the order sticks.
Verified Video Walkthrough
Focus on the chain sweep. The correct first bus is the one the front color asks for, not the one that looks closest.
Grabbing the nearest bus instead of the one that matches the front of the queue. The wrong color jams the slots and forces a restart.
Pros and Cons
Pros. The chain sweep is clearly signposted, so once you read it the level opens up cleanly and is easy to replay.
Cons. The chain sweep punishes a rushed first move, so a single wrong dispatch can look identical to a near-success.
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Bus Traffic Fever Level 221 FAQ
How do I beat Bus Traffic Fever Level 221?
Clear the chain sweep first, then follow the queue front to back. The correct first dispatch is the bus that matches the passenger color waiting at the front.
What is the chain sweep in Bus Traffic Fever Level 221?
It is the one mechanic the level is built around: one correct dispatch frees the next bus, so the whole level is a single unbroken line. Read it before your first move and the rest of the level follows the same pattern.
Why does Bus Traffic Fever Level 221 keep stalling?
Almost always the first dispatch is the wrong color. Restart and match the front passenger group instead of grabbing the nearest bus.
Do I need a full walkthrough for Bus Traffic Fever Level 221?
No. The first few seconds show the opening order, and the chain sweep is the whole key — the rest repeats the same read-then-dispatch loop.
Is Bus Traffic Fever Level 221 harder than the levels before it?
It is hard, so it asks for tighter queue reading. Once the chain sweep clicks, it clears faster than it looks.