Marble Sort Level 278 Walkthrough & Solution

Level 278 Board Overview: Split-Board Lock Trap

The verified walkthrough identifies the opening board as Split-Board Lock Trap. The first confirmed moves are: Play only the right side at the start, sending the Dark Green receiver down immediately to clear it out of the way. Then: 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. The next safe order is recorded below so the belt does not fill with bait.

The Trap in Marble Sort Level 278

• Opening bait: To break the Crates, clear exactly three nearby boxes, concentrating your next moves on the red, cyan, and gold receivers hugging them.
• Board order: When a Light Pink bottom Box slides up, grab the Light Pink stashed on the belt at once to open up that slot.
• Belt discipline: Use only the first verified clears here; do not spend belt space on a color without an active receiver.

Marble Sort Level 278 Step-by-Step Walkthrough

Opening: follow the safe first clears

1. Play only the right side at the start, sending the Dark Green receiver down immediately to clear it out of the way.
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. To break the Crates, clear exactly three nearby boxes, concentrating your next moves on the red, cyan, and gold receivers hugging them.

Midgame: open the next receiver path

After the opening clears, let the next exposed groups move only when their receiver is ready.

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. 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. Feed the Green and Yellow boxes pinned beneath the chains, then move through the six Mystery Boxes one at a time.

Cleanup: finish the remaining sequence

The final phase follows the remaining source order. Pause whenever the belt starts to fill.

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. 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 Tips Recap

• To break the Crates, clear exactly three nearby boxes, concentrating your next moves on the red, cyan, and gold receivers hugging them.
• Feed the Green and Yellow boxes pinned beneath the chains, then move through the six Mystery Boxes one at a time.
• 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.