Marble Sort Level 357 Walkthrough Solution | Marble Sort 357

Marble Sort Level 357 Guide: The Chain and Key Trap

This board is an absolute mess right out of the gate. You are staring down a massive central chain, buried mystery mechanics, and a tightly restricted lower section. Your dominant colors early on are Light Blue, Dark Blue, and Green, but the top tray is rigged to make you panic-click the wrong colors.

The central obstacle controlling everything here is the heavy Lock and Key chain spanning across the middle of the board. Until you break that lock, the entire center column of the game is dead space. To survive, you have to be incredibly precise with your first five clicks. One wrong drop into the Conveyor Belt, and you will clog your limited space before the board even opens up.

The Lock and Key pattern in Marble Sort Level 357

You need to understand exactly how this specific board is layered before you start tapping. The Top Tray is divided into two main wings, separated by a vertical column of three grey Mystery Boxes. Spanning directly over these boxes is a massive steel chain held together by a golden lock.

Directly below the chain, sitting horizontally, are two golden keys facing inward. These keys are resting on top of the bottom row of marbles in the Top Tray.

Look at that completely exposed bottom row in the Top Tray. From left to right, you have Light Blue, Dark Green, Brown, Light Blue, Dark Blue, Bright Green, and Orange. This row is your only starting lifeline.

Now, look at the front row of your bottom Boxes. From left to right, you need Green, Dark Blue, Light Blue, and another Light Blue.

This setup creates a massive bait trap. The Orange and Brown marbles on the bottom row of the Top Tray look totally free and easy to grab. Do not touch them. Look at the lower Boxes. The first Orange Box is buried in row three. The first Brown Box is buried in row four. If you release the Orange or Brown marbles now, they will sit on your Conveyor Belt for half the game, eating up the vital space you need to maneuver.

You also have two Multiplier Gates labeled x2 sitting directly above the lock and key mechanism, one on the left wing and one on the right. These will become your best friends, but only after you clear the garbage blocking them. The entire puzzle here is about breaking the bottom row to trigger the keys, dropping the chain, and opening up the multiplier pipes.

Marble Sort Level 357 Step-by-Step Walkthrough

Follow this exact sequence to break the lock and avoid clogging the belt.

Releasing the first row in Marble Sort Level 357

Your initial goal is completely tied to the bottom front row of Boxes. We must match Green, Dark Blue, and two Light Blues to survive the opening.

1. Tap the far-left Light Blue marble and the middle Light Blue marble in the Top Tray. These will drop down and feed directly into the two Light Blue bottom Boxes on the right side.
2. Tap the Dark Green marble (second from the left) in the Top Tray. This will feed the far-left Green bottom Box.
3. Tap the Dark Blue marble (third from the right) in the Top Tray. This clears the Dark Blue bottom Box in the second column.
4. Leave the Brown, Bright Green, and Orange marbles completely alone. Touching them now will instantly jam your Conveyor Belt.
5. Watch the golden keys. By clearing the marbles directly beneath them, the boxes drop, the keys activate, and the large central lock breaks open. The chain vanishes.

Activating the Multiplier Gates in Marble Sort Level 357

With the chain gone, the board completely transforms. The center column is exposed. The Multiplier Gates are now clear for drops.

6. Check your newly exposed bottom Boxes. You will now see Purple and White Boxes pushing to the front of the queue.
7. Look at your Top Tray. You have a solid row of Purple marbles sitting directly above the left x2 Multiplier Gate. Drop them through the green pipe. The game will double the marbles, instantly filling the lower Purple Box with half the required drops.
8. Look at the White marbles sitting directly above the left gate. Drop them next. They will multiply and slam into the waiting White bottom Boxes.
9. Now you can safely drop the Brown marble from the starting bottom row. The Brown bottom Box will have shifted forward enough to be playable.
10. Drop the Orange marble from the far right. The Orange bottom Box is now accessible in the lower layout.

Clearing the Mystery Boxes in Marble Sort Level 357

You are now in the late game. The wings are thinning out, but the center column of Mystery Boxes is still sitting there.

11. Tap the top Mystery Box in the center column. It will drop onto the Conveyor Belt and reveal its color.
12. Do not blind-tap all three Mystery Boxes at once. If they reveal colors that do not match your current front bottom Boxes, you will instantly game over.
13. Drop one Mystery Box, match it to a lower Box, and let it clear.
14. Repeat this for the second and third Mystery Boxes.
15. Mop up the remaining top corners. You will have a cluster of Yellow, Orange, and Pink marbles high up on the right wing, and a few stray Blues on the left. Carefully match them to the remaining bottom Boxes, keeping a strict eye on your belt space to secure the win.