Marble Sort Level 339 — Walkthrough and Solution

This level presents a cross-shaped board where a vertical chain and a Lock immobilize the center-left column, acting as a barrier. The left and right wings contain Arrow Boxes that point inward, but they cannot slide until that lock is gone. The solution is to clear the safe bottom Boxes first, then gather keys from the outer edges to shatter the Lock, and finally manage the Tunnel and lower locks to finish.

Marble Sort Level 339 board layout: The Top Tray forms a cross. The center-left column is locked and holds, from top to bottom, Red, Orange, Green, and Orange boxes. To the left of that column, there is a Blue Arrow Box and a Pink Arrow Box, both pointing right. To the right, a Green Arrow Box and a Red Arrow Box point left. On the far left edge, there are Red and Yellow boxes carrying keys; on the far right, Orange and Brown boxes carry keys. An Orange key floats next to the central blue Tunnel, which has a countdown of 3. At the bottom, from left to right, the starting Boxes are: Dark Green, Orange, Pink, and Light Green. Under the Orange box sits a Mystery Box, and below that a Locked bottom Box. The top right has a tall vertical stack containing Pink, Yellow, Purple, and Blue.

Marble Sort Level 339 Walkthrough

The bottom row initially shows Dark Green, Orange, Pink, and Light Green as active demands. You must clear only the safe middle clusters first, avoiding the wings until the lock is broken. The main trap is that tapping the Arrow Boxes early will fill your Conveyor Belt with unmovable pieces, so always wait for matching bottom Boxes to appear.

The critical insight: the chain lock is the gatekeeper. Until it's removed, the Arrow Boxes can't move, and the board is essentially frozen. The keys to unlock it are on the extreme edges, so you must clear the bottom middle to reveal the key-demanding Boxes.

How to Beat Marble Sort Level 339 — Step-by-Step

Phase one: Clear the initial safe clusters

1. Tap the Pink box in the bottom-middle cluster of the Top Tray, matching the Pink bottom Box on the far left.
2. Tap the Light Green box right next to it, matching the Light Green bottom Box.
3. Tap the Dark Green box in the same cluster, matching the Dark Green bottom Box.
4. Look above the cleared area for an Orange box adjacent to a Yellow Arrow Box; tap that Orange box to match the Orange bottom Box in the second column.
5. After that, the Mystery Box beneath the Orange bottom Box is revealed, but do not touch any Arrow Boxes yet.

Phase two: Unlock the chain and free the arrows

1. Watch the bottom Boxes for Red or Yellow demands. When a Red bottom Box appears, tap the Red key on the far left edge.
2. Similarly, when a Yellow bottom Box is active, tap the Yellow key next to the Red one.
3. On the right side, wait for an Orange bottom Box to appear, then tap the Orange key on the far right.
4. When a Brown bottom Box shows up, tap the Brown key next to the Orange key.
5. Also, as soon as an Orange bottom Box is active, tap the floating Orange key near the central Tunnel.
6. Once all keys are collected, the Lock shatters, freeing the center-left column (Red, Orange, Green, Orange).
7. Now the Arrow Boxes can move: the Blue and Pink arrows on the left can slide right, and the Green and Red arrows on the right can slide left, but only drop them when their matching bottom Boxes are active.

Phase three: Manage the tunnel and lower locks

1. Feed the blue Tunnel whenever the Conveyor Belt is clear; it requires three pulls to empty.
2. As you clear Mystery Boxes, locked bottom Boxes will surface, such as a Purple one and a Pink one later.
3. Look in the top right stack (Pink, Yellow, Purple, Blue) for keys to unlock those lower locks.
4. Keep the Conveyor Belt under four marbles; match strictly front-to-back to avoid jams.

Tips & tricks

• Always clear the three safe bottom-middle marbles first to reveal the Orange that matches the second column.
• Collect keys in the order they become available: Red and Yellow on the left, Orange and Brown on the right, plus the floating Orange.
• Use the Tunnel early and often, but only when your Conveyor Belt is nearly empty to avoid overflow.

Common mistakes

• Tapping the Arrow Boxes before the chain lock is broken, which clogs your Conveyor Belt with immovable pieces.
• Ignoring the key boxes on the edges until it's too late, leaving the center column stuck.
• Letting the Conveyor Belt exceed four marbles, especially when Mystery Boxes are about to reveal new demands.

Marble Sort Level 339 FAQ

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