Marble Sort Level 407 — Walkthrough and Solution

Marble Sort Level 407 opens as a chaotic coordination test where the top tray is overloaded and the bottom Boxes seem to demand colors that are buried. The winning approach is to clear the four front-line colors (Brown, Pink, Blue, Orange) before ever touching the key on the far left, then methodically release the chain and solve the Mystery Boxes. Ignore the tempting Green on the bottom left; it is a decoy that will flood your Conveyor Belt.

The board has a Top Tray with a metal chain locking the top row (Red, Orange, Blue). The key for that chain sits on a Light Pink marble halfway down the leftmost column. The center has three Iced Box marbles (Light Blue, Yellow, Light Purple). Lower down, two Connected Boxes tie a Dark Red to a Bright Pink, and a Dark Blue to a Teal. The bottom row of the Top Tray shows Green on the far left, Brown next, Blue in the middle, Brown to its right, and Pink on the far right. The bottom Boxes demand: Column 1 needs Blue, Green, Light Pink, and another Blue; Column 2 wants Pink and has a Mystery Box plus more Pink; Column 3 needs Brown, Yellow, Orange, and extra Brown; Column 4 has Orange, two Mystery Boxes, and two Blues. The right side hides a double Mystery Box stack that must be handled late.

Marble Sort Level 407 Walkthrough

Your bottom Boxes, left to right, demand Blue, Pink, Brown, Orange for the front row. The accessible marbles in the Top Tray's bottom layer are Green (far left), Brown (second), Blue (middle), Brown (fourth), and Pink (far right). The initial imbalance is that the leftmost Green is useless because no Green Box is yet available, while the right side's Mystery Boxes are locked behind the Orange and Blue you must clear first.

The real trap is the key on the Light Pink marble: if you dig for it early, you will pull Greens and Yellows that have nowhere to go, jamming your belt. So ignore it until the front row is satisfied.

How to Beat Marble Sort Level 407 — Step-by-Step

Phase one: Clear the Front Row

1. Tap the Brown marble on the bottom left of the Top Tray and deliver it to the third Box.
2. Slide the second Brown marble (located next to the first) into the same Box.
3. Drop the Pink marble from the far right of the bottom row into the second Box.
4. Route the Blue marble from the middle of the bottom row to the first Box.
5. Leave the far-left Green marble untouched.
6. Guide the Orange marble just above the bottom right corner into the fourth Box.

Phase two: Unlock the Chain and Feed the Mysteries

1. After clearing the front row, column 2 exposes a Mystery Box and column 3 shows a second Brown Box.
2. Carefully remove the Yellow and Orange pieces on the left side to expose the Light Pink marble that holds the key.
3. Drop that Light Pink marble into an empty Box or onto the belt if space is free; the chain shatters, freeing Red, Orange, and Blue at the top.
4. Pull the Connected Boxes pair: first the Dark Red and Bright Pink, then the Dark Blue and Teal—this thaws the central Iced marbles.
5. Check what color the Mystery Box in column 2 reveals and match it immediately from the newly freed top row.

Phase three: Survive the Right-Side Mystery Stack

1. As you dig, the right side exposes two Mystery Boxes in column 4.
2. Pause and check the belt; if it's filling with Light Pink, Teal, or Green, stop tapping and plan.
3. If a Mystery Box shows Yellow, locate a Yellow from the thawed center and feed it.
4. Finally, pull the bottom-left Green you ignored at the start, plus any Greens from the upper right, to fill the Green Boxes.
5. Finish by aligning the remaining Blue and Purple marbles with the top row; keep taps deliberate to clear the board.

Tips & tricks

• Always clear the front row before touching the key; the belt cannot handle early Greens.
• Use the belt as a short-term buffer only—never let it exceed two marbles of the same useless color.
• When a Mystery Box appears, immediately check the top tray for that color; delay causes cascading jams.

Common mistakes

• Digging for the key too early, which floods the belt with unusable colors.
• Ignoring the Connected Boxes; pulling one without the other leaves you stuck.
• Forgetting the bottom-left Green until the end, then having no space to move it.

Marble Sort Level 407 FAQ

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