Marble Sort Level 628 Walkthrough Solution | Marble Sort 628

Marble Sort Level 628 Guide: The Numbered Lock Trap

This board is an absolute trap. Marble Sort Level 628 throws a massive bottleneck at you right from the start. You are staring down a board heavily dominated by Green, Blue, Red, Orange, and a very dangerous amount of Purple.

Your Top Tray is heavily divided. The outer edges are exposed, but the juicy center columns are completely choked off by two blue numbered gates. A massive striped pillar drops straight down the dead center, sitting on top of a rainbow ring and a dense block of blue marbles.

Meanwhile, your starting bottom Boxes are demanding very specific colors. The front row asks for Orange, Orange, Green, and Red. You have to feed these exactly what they want. If you just start tapping colors that look easy, you will lose. The obstacle controlling this entire run is the Lock and Key system. Those blue gates with the "2" on them will not budge until you find and clear the specific dotted key marbles hiding on the edges.

The Lock and Key pattern in Marble Sort Level 628

To beat this level, you have to read the board layout before you make a single tap. The Top Tray is built to bait you into bad moves.

Look at the far left side. You have a Red marble, a Blue marble, and right beneath them, a Green marble with a tiny bright dot. That dot is your key. The far right side holds a Red marble and two stacked Orange marbles.

The middle of the board is a locked vault. The center-left column trapped under the "2" gate holds Orange, Blue, Red, and Purple. The center-right column under the other "2" gate is packed with a nasty stack of Purple, Purple, Green, and Purple. You cannot touch any of these until you lower that gate number.

Your bottom Boxes dictate the opening strategy. With two Orange Boxes, a Green Box, and a Red Box in the front row, you have a strict shopping list. Purple and Pink are buried in the second row.

This brings us to the biggest trap in Marble Sort 628. Purple is pure bait. The board wants you to look at that heavy concentration of Purple in the center-right and panic. If you unlock that side and start dumping Purple marbles onto the Conveyor Belt before the Purple Boxes rotate to the front, your run is over. The belt will jam instantly. The right side of the Conveyor Belt always gets crowded first here because the right side of the Top Tray opens up faster. You have to clear the Orange and Green Boxes to pull the Purple Boxes forward.

Marble Sort Level 628 Step-by-Step Walkthrough

Follow this exact drop order. Space on the Conveyor Belt is your most valuable resource. Do not rush.

Triggering the outer keys in Marble Sort Level 628

The first few taps are about feeding the front row and breaking the lock counters. Leave the center completely alone.

1. Drop the two Orange marbles sitting on the far right edge of the Top Tray. They will immediately feed the front-left Orange Box.
2. Tap the single Red marble sitting above those Oranges. This goes straight to the front-right Red Box.
3. Now look at the far left edge. Drop the top Red and Blue marbles onto the Conveyor Belt. You are doing this just to expose the Green marble underneath them.
4. Drop that dotted Green marble. This is your first Lock and Key activation. As soon as it hits the Conveyor Belt and sorts into the front Green Box, the blue gates in the middle will drop their countdown from "2" to "1".
5. Do not touch any Purple marbles. Your belt is currently holding a Blue and a Red. Leave them there. Wait for the front Boxes to clear and rotate.

Managing the Conveyor Belt in Marble Sort Level 628

Clearing that first front row shifts the entire puzzle. The lower Boxes will cycle, bringing up a new front row of Brown, Orange, Purple, and Blue. Now the middle of the board becomes the war zone.

6. Find the second dotted Green key marble. Once you drop it, the blue lock gates will hit "0" and lift entirely.
7. The center columns are now live. The center-left exposes a Light Blue multi-marble square. The center-right exposes that massive, dangerous Purple stack.
8. Since a Purple Box is now finally in the front row, you can safely unleash the center-right column. Tap the Purple marbles and watch them clear out immediately. This prevents the ultimate failure state of a choked belt.
9. Watch out for hidden colors. As the heavy blocks on the left and right get mined out, unexpected pale yellow marbles will appear in the deeper layers. Do not tap them until you physically see a yellow Box move into the active front slots.
10. If your Conveyor Belt starts filling up with mixed colors—like a messy line of Purple, Red, and pale yellow—stop tapping. Look exactly at what your front Boxes need and only drop those specific matches.

Clearing the locked center in Marble Sort Level 628

With the left and right flanks mostly hollowed out, the central striped pillar area finally opens up.

11. Feed the Brown marbles from the middle-right area into the newly arrived Brown Box. This will uncover the last heavy blocks.
12. Drop the dense blue multi-marble square sitting at the very bottom center. Your Blue Box in the front row will swallow it up.
13. Now clean up the stragglers. You will have a few stray Pink, Light Blue, and Red marbles left on the upper corners. Keep an eye on your Conveyor Belt slots. If you only have two empty spots left, you must guarantee that your next tap triggers a three-marble clear.
14. Empty the remaining Pink marbles to finish the board.

Stay disciplined with your Conveyor Belt space and respect the lock counters. That is exactly how you beat this board.