Pixel Drop: Bus Puzzle level guide
Pixel Drop: Bus Puzzle Level 4 Walkthrough
Use yellow 20 on the outer rail first, then feed red 40 and blue 40 into the center lanes while keeping another yellow slot free for the returning border pieces.
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How to Solve Pixel Drop: Bus Puzzle Level 4 — Full Solution
- Park yellow 20 first so the bottom outer border starts draining immediately.
- Park red 40 and blue 40 next to begin collapsing the inner rectangle from the center outward.
- Add the next red 40 when a slot opens, keeping the red middle lane active while blue continues draining the side bands.
- Reintroduce yellow as soon as the next yellow bus reaches the front row so the outer rails and corners keep shrinking instead of waiting behind red and blue.
- Cycle the smaller late yellow, red, and blue buses in front-row order to finish the side posts, the center core, and the remaining outer corners.
- Wait for the final yellow border pieces and the last red/blue center fragments to disappear together before ending the level.
Colors in this level:
Yellow, Red, Blue
Common Mistakes to Avoid
- Filling every free slot with red and blue once the center opens, leaving no capacity for the returning yellow outer rail.
- Treating one cleared ring as proof that the same color is finished, even though another concentric lane still remains.
Quick Tips for Pixel Drop: Bus Puzzle Level 4 (quick clues)
- Yellow is not a one-time opener; the border returns after the center starts breaking.
- Red and blue move faster in the middle, but do not lock yellow out.
- The last outer corners need as much attention as the small central square.
Board notes 5 details
- Layout
- The picture is a rectangular target made from a yellow outer border, blue middle bands, and a red inner lane surrounding a small yellow center. Five slots start empty. The queue opens with yellow 20, then red 40 and blue 40, followed by more red/blue 40 buses and smaller yellow buses that return when the outer rails reopen.
- Goal
- Clear the yellow outer track without starving the red and blue inner rings, because the same colors reappear in repeated concentric lanes instead of clearing in one pass.
- Opening
- Park yellow 20 first for the exposed bottom rail, then red 40 and blue 40 to attack the center. A second red 40 follows quickly, and the active row spends the middle of the run draining red and blue in the 30s while yellow still needs its own returning slot on the outer border.
- Danger Zone
- Once the red center and the blue middle lane are both open, it is easy to spend every slot on those two colors. If the next yellow bus cannot enter, the side rails and corners of the outer border remain on screen while the center empties.
- Mechanics
- This board repeats all three colors in concentric layers. Clearing a red or blue ring once does not finish that color; another lane of the same color remains either inside or outside the area you just cleared.
Frequently Asked Questions
Why is yellow 20 the opener in Pixel Drop: Bus Puzzle Level 4?
It starts the exposed outer rail right away and prevents the border from lagging behind the red and blue center lanes.
What usually causes the rectangular target to stall?
The outer yellow corners get locked out when all active slots are already occupied by red and blue buses for the center.