Marble Sort Level 278 Solution: The Move Order That Clears the Board

Easy-Medium ★★☆☆☆ ~30 moves

Screenshots

Marble Sort Level 278 screenshot 1Marble Sort Level 278 screenshot 2Marble Sort Level 278 screenshot 3Marble Sort Level 278 screenshot 4

Step-by-step solution

Quick answer
  1. 1) Play only the right side at the start, sending the Dark Green receiver down immediately to clear it out of the way.
  2. 2) Click the Light Pink to park it on the Conveyor Belt, then take the Purple box behind the front row and feed it into the front Purple receiver below.
  3. 3) To break the Crates, clear exactly three nearby boxes, concentrating your next moves on the red, cyan, and gold receivers hugging them.
  4. 4) When a Light Pink bottom Box slides up, grab the Light Pink stashed on the belt at once to open up that slot.
  5. 5) Once the Crates smash open, drop the box carrying the purple key first and then the gold key to finally unlock the left column.
  6. 6) Feed the Green and Yellow boxes pinned beneath the chains, then move through the six Mystery Boxes one at a time.
  7. 7) For each Mystery Box, send the color home if a matching bottom Box is ready, or hold it on the belt and seek its match over on the right before pulling the next one.
  8. 8) Before triggering the two top-left Gift Boxes, confirm at least four belt slots are free, then clear the Mystery Boxes beneath them and sort the revealed colors into your remaining bottom Boxes to finish.

Level 278 Split-Board Lock Trap

This level hits one with an immediate, massive roadblock.

When one load into sphere Sort Level 278, half this board is completely walled off.

this west side sits held trapped via big chains, as this east side is dominated by massive wooden obstacles.

this dominant playable shades first over sit Dark emerald, Light rose, amber, plus violet, but this order on which one touch them shall dictate whether one survive the first two minutes.

this biggest snare here is the Conveyor Belt space.

this east side tempts one into just start clicking colors to dig deep.

Do that, plus you will instantly jam your belt.

one hold into match this upper releases perfectly using this lower receiving cases , or this locked west side will permanently end your run.

Level 278 Dual Obstacle Pattern

Look closely at how this exact board is structured.

that sits designed into force you down a single, narrow path.

this upper rack is aggressively split into two distinct zones.

this west side sits entirely dead to you at the start.

that features two huge seal plus pass chains—one violet seal over upper and a gold lock on the bottom.

concealing directly above those locks are six grey Mystery Boxes .

Above those sit two azure Gift Boxes , each stamped with a "3".

one can't touch one single sphere over this west side until you find the keys.

the entire first game takes place over the right side of the Top Tray .

This part features normal colored cases, but that sits heavily restricted via two big wooden Crates using up the top and middle space.

this playable head line over this east consists from one Light rose, an Orange, and a Dark Green box.

past them sit violet, Red, Light Blue, Green, and Yellow boxes.

this head line demands Yellow, Dark Green, Purple, and Yellow.

this second line wants violet, Light Pink, Purple, and Dark Green.

This sits where Marble Sort 278 tricks you.

Light rose plus amber sit parked east on this head from the Top Tray , begging to be clicked.

the lower cases do not want amber at all east now, plus Light rose is buried in the second row.

If one bring them down too first, they shall rot over this Conveyor track , stealing this rare room one need to shuffle colors around the Crates .

Level 278 Level Overview

one should empty this east side into break this Crates , find this keys, plus finally unleash the locked left side.

Follow this exact send order to keep your belt clean.

Level 278 Cracking the Right Side

this opening taps sit all about controlled demolition over the right side of the Top Tray .

that rests over the bottom right of the Top Tray .

the lower case row has a Dark Green receiver ready.

Send that down immediately into get it out of the way.

one want access into this violet box sitting just behind the front row.

Click this Light rose to move it to the Conveyor Belt .

using Light rose out from this way, take this violet case plus send that into the front-row Purple bottom Box .

into destroy this wooden Crates , one must clear exactly three nearby boxes.

Focus this next sends over this crimson, Light azure, plus Yellow boxes pressing up against the Crates .

As one empty this Dark emerald plus violet bottom Boxes , new ones will slide forward.

If one Light rose lower case slides onto, immediately claim this Light rose one west over this Conveyor Belt to free up that slot.

Level 278 Breaking this Locks and Mystery Boxes

Once one empty enough from this right side, the Crates will smash open.

This uncovers this deeper layers where the keys are hiding.

This totally shifts this momentum of Marble Sort Level 278.

As one dig through this broken box area, one shall expose the boxes carrying the key symbols.

send this case using this purple key first, then the gold key.

one finally have access to the left column.

send this emerald plus gold boxes that were trapped under the chains.

one are now staring down six Mystery Boxes .

one hold zero idea what shades sit inside them until the front one drops.

If one hold a matching bottom Box , send it home.

If one don't, leave that over this Conveyor track plus find its match over this east side from the board before dropping another mystery color.

Level 278 Managing the Gift Boxes

this wall from this level sits heavily dictated via this two Gift cases sitting at the very top left.

One Gift case just opens when a nearby box is dropped.

one want into empty this last secret cases directly beneath them into trigger the opening sequence.

Before one trigger this Gift Boxes , look at your Conveyor Belt .

Make sure one have at least four empty slots.

When this Gift cases pop, they shall reveal multiple new colored boxes.

If the track sits full, this sudden show will cause an instant game over.

Sort this newly revealed shades from this Gift cases into the remaining bottom Boxes to finish the board.

Keep prioritizing this front row receivers over deep matches.

Frequently Asked Questions

What is the main trap to avoid in Level 278?

The biggest mistake is tapping colors that have no active bottom Box yet. They park on your Conveyor Belt and burn limited slots, so clear the shades that actually have receivers first.

How should I open Level 278?

Ignore the upper layers and aim at the bottom row of the Top Tray. Feed the colors that already have open boxes, then work upward once the lower lanes shift.

When does the midgame color change happen in Level 278?

After the opening boxes fall, the lower columns swap what they demand. Watch for the new shades and only pull blocks that match a box sitting at the front of a lower lane.

Any tip for finishing Level 278 clean?

Keep at least a few empty belt slots before poking mystery or hidden boxes. Feed a revealed color the moment it matches an active box, and fall back to visible marbles when the belt gets tight.