Marble Sort Level 131 Walkthrough & Solution

Level 131 Board Overview: The Four-Well Feed Line

Level 131 opens on a long wooden Top Tray with four green wells drilled into it, each one a marble column with a numbered cap. The far-left well stacks Blues with a Brown, Red, and Pink cluster resting at its base. The second well holds Oranges. The third is a mixed Yellow, Cyan, and Pink column, and the far-right well carries Cyan, Orange, and Purple under a pale cap. Every well funnels into its own exit tube, and at the start all four tubes are already stuffed with Red marbles waiting to pour out.

Below the tray, a horizontal feed line holds four queued marble groups: Blue, then Cyan, then Green, then Cyan again. This queue is the level’s clock — it barely moves for the first two minutes, then empties in the final stretch. Underneath the feed line sits the receiver wall: several rows of 3-slot boxes. The opening front row shows Yellow, Yellow, Blue, a White-and-Cyan box, and Pink, with Red, Brown, Orange, and Pink boxes stacked in the rows behind.

Blue and Cyan are the first colors with real homes, so they drive the entire opening. Green is the odd one out — it sits in the middle of the feed line with no Green box anywhere in the visible rows. That gap is the whole level.

The Trap in Marble Sort Level 131

The board is rigged to make you panic about the wrong colors. Here is what the frames actually show:

• Green queue in the feed line: the Green group sits between the Cyan groups for roughly two and a half minutes. Its box only rotates into the delivery position in the final stretch, so the entire Green queue is dead weight until then.
• Four Red exit streams: every tray well ends in Red at its tube exit, so Red pours out in waves — once during the opening and again in the midgame. If the Red boxes are not cycling forward, all four tubes jam at once.
• Right-well colors: the Cyan, Orange, and Pink marbles stacked in the two right wells look ready, but their boxes do not surface until the midgame. Feeding them early just clogs the lanes.
• Brown in the left column: the Brown marbles buried under the left well’s Blue stack match back-row Brown boxes. They have the quietest home on the board and should be left alone.

The opening hours belong to Blue and Cyan; everything else is a trap until its row rotates up.

Marble Sort Level 131 Step-by-Step Walkthrough

Follow the delivery order the frames use. Blue and Cyan first, Green absolutely last.

Opening: the blue and cyan wave

1. Feed the Blue stack in the far-left well straight down into the front Blue boxes. This is your safest lane and it never stops producing.
2. Pull the Cyan marbles from the right-hand wells into the front Cyan box slots as they surface.
3. The first Cyan group on the feed line rides forward once those front Cyan boxes are ready — take it immediately.
4. Let the Red marbles at the well exits flow when the Red row is one box away; the opening Red wave is small and harmless if the Red boxes are near the front.
5. Do not touch the Green group in the middle of the feed line. There is no Green box in any opening row.
6. The front Yellow boxes fill slowly — only feed Yellow when a Yellow marble actually surfaces; the early Yellow deliveries are sparse.

Midgame: pink, orange, and the second red wave

7. Around the forty-second mark the Pink marbles from the right wells reach the front. Feed them into the Pink boxes as they cycle forward.
8. Orange comes next from the second well; an Orange box row surfaces mid-board to take it.
9. The second Red wave pours from the center lane. Keep a Red box in the front position through this stretch — it lasts the longest of any single color.
10. Yellow keeps appearing in small groups and shares the late-mid rows with Pink and Red. Feed it opportunistically.
11. Leave the Brown marbles at the base of the left column alone. The back-row Brown boxes only rotate up in the endgame.
12. The far-right well’s Cyan and Orange mix clears during the midgame as those boxes pass through the front row — let them, and keep the lane moving.

Cleanup: blue, cyan, and the green finale

13. When the feed line finally starts to empty, the Blue group still parked on it moves forward. Feed it as the Blue boxes return to the front.
14. The second Cyan group follows immediately after the Blue — it is consumed right before the belt runs dry.
15. Green is last. The Green box reaches the delivery position in the final stretch and the whole Green queue drops into it at once.
16. With the feed line empty and the wells quiet, the last boxes fill and the level clears — the frames show the tray, conveyor, and box wall all empty just before the victory screen.

Level 131 Tips Recap

• Green is the level’s patience test: it has the last box, so leave the Green queue alone until the feed line is nearly empty.
• Red arrives in two waves from all four well exits — keep a Red box within reach at all times.
• Blue and Cyan own the opening; clearing them first is what starts the box rows cycling.
• A color with no box in the front rows is bait — wait for its row to rotate up before feeding it.