Marble Sort Level 138 Walkthrough Solution | Marble Sort 138

Marble Sort Level 138 Guide: The Double Panel Trap and Early Jam Risk

If you are stuck on this one, you are not alone. This board is specifically designed to bait you into making a fatal mistake on your very first tap. You load in, see some brightly colored blocks ready to go, and your instinct is to immediately drop them onto the Conveyor Belt. Do not do it. This board is a masterclass in queue management and forced waiting.

To beat Marble Sort Level 138, you have to completely ignore the most obvious moves and hunt for the awkward, asymmetrical matches on the edges. The puzzle relies heavily on obscuring your vision and strangling your Conveyor Belt space before you even realize you made a mistake. Let's break down exactly how this trap works and how to tear it apart.

The Deceptive Board Pattern in Marble Sort Level 138

The layout of Marble Sort Level 138 is incredibly hostile right out of the gate. Most of your Top Tray is covered in gray mystery blocks marked with question marks. You cannot see what colors you are actually working with in the center. Worse, two massive Panels sit right in the middle of the grid. Each Panel is marked with a "4", meaning you have to clear four complete bottom Boxes before those sections of the board even unlock to reveal what is hiding underneath.

The real danger sits at the very bottom edge of the Top Tray. You have three clearly visible, accessible blocks right on the frontline: a red block on the left, a green block in the middle, and a blue block on the right.

Now look down at your starting bottom Boxes. The four columns demand brown, blue, brown, and orange to start.

Do you see the trap? If you tap the red or green blocks at the bottom of the Top Tray, you are dead. They will drop down onto the Conveyor Belt and just sit there. There are no red or green bottom Boxes available to accept them. You will permanently lose valuable slots on your belt for a color that might not become playable until the midgame.

The right side of the board is your only lifeline. You have a blue bottom Box in the second column and an orange bottom Box on the far right. Up in the Top Tray, you have that frontline blue block, and slightly further up the right edge, a visible orange block. This right-side bias is the entire key to opening the level.

Marble Sort Level 138 Step-by-Step Walkthrough

You have to be surgical here. One wrong tap on a mystery block or a bait color will clog your Conveyor Belt and end your run. Follow this exact clear order to safely dismantle the board.

Navigating the Opening Bait in Marble Sort Level 138

Your only goal right now is to clear four bottom Boxes to shatter those "4" Panels without jamming your belt.

1. Ignore the front red and green blocks. Leave them completely alone. They are poison right now.
2. Tap the frontline blue block. Send it down to fill the blue bottom Box waiting in the second column.
3. Grab the exposed orange block. It sits on the middle-right edge of the Top Tray. Drop it to fill the top orange Box in the far-right column.
4. Hunt for brown in the mystery blocks. You desperately need brown marbles to clear the first and third columns. Carefully tap the accessible gray mystery blocks sitting just above the frontline. Route any brown matches immediately into the waiting bottom Boxes.
5. Clear the secondary orange. As you clear the front orange Box, another orange Box sits right beneath it. Look for the next orange cluster hiding behind the mystery blocks on the right side and drop it down.

Shattering the Panels in Marble Sort Level 138

Once you manage to clear four bottom Boxes, the dynamic of the board flips entirely.

1. Watch the Panels break. Hitting that fourth clear shatters the two "4" Panels in the Top Tray. The board suddenly opens up, revealing a massive chunk of solid colors.
2. Assess the newly revealed Top Tray. The left side will suddenly expose heavy stacks of dark green and light green. The center and right will reveal white, pink, purple, and blue.
3. Check the bottom Box shift. Your bottom targets will drastically change. The lower columns will cycle into a heavy mix of purples, light greens, and whites.
4. Clear the purple backlog. You will likely have multiple purple bottom Boxes queued up across the columns. Use the newly exposed purple blocks from the shattered right Panel to clear these out. This creates massive breathing room.

Managing the Late Conveyor Crush in Marble Sort Level 138

The final phase of the board tries to overwhelm you with volume. You will have a lot of green blocks exposed up top, but you must release them in the correct sequence.

1. Do not dump the greens blindly. The left side of the Top Tray has a thick stack of dark green sitting right on top of light green. Only drop the dark green if you have a dark green bottom Box actively open. If you drop them onto the Conveyor Belt too early, they will block the light greens you might actually need.
2. Focus on the whites and pinks. The middle of the Top Tray holds crucial white and pink blocks. Prioritize dropping these to clear out the stubborn bottom Boxes in the center columns.
3. Cycle the remaining colors. Once the center columns clear, the final bottom Boxes will demand the remaining greens and browns. Keep your Conveyor Belt moving. Never let more than three unmatched marbles sit on the belt at this stage.
4. Empty the left column. Drop the remaining stacked green blocks into their matching bottom Boxes to finish the board.