Marble Sort Level 681 — Walkthrough and Solution

Marble Sort Level 681 presents a split-board challenge where a large central empty area separates the playfield into two independent zones. The primary obstacle is a set of upward-pointing Arrow Boxes on the right that require clearing from the top down, while the left side functions more conventionally with downward arrows. To succeed, you must prioritize the left flank first, feeding the bottom Boxes in order, then switch to the right side's top-down logic, and finally manage the Iced Boxes and Crates in the corners.

The layout features a top tray with two distinct sections. On the left, three columns of downward-pointing Arrow Boxes contain Blue, Pink, and Yellow marbles, positioned above a cluster of free marbles including Yellow, Red, Dark Blue, and Light Blue. On the right, upward-pointing Arrow Boxes hold Green, Pink, Yellow, and Orange marbles, with free Blue, Pink, Light Blue, and Brown marbles at the very top. Two Crates anchor the corners: one in the top-left near a green Iced Box, and another in the bottom-right adjacent to a yellow Iced Box. The bottom row consists of front-line Boxes for Purple and Light Blue, followed by a second row with Light Blue, Purple, Green, and Green, and a back row of Dark Blue Boxes.

Marble Sort Level 681 Walkthrough

The front-row bottom Boxes demand Purple and Light Blue marbles in that order. As you clear these, the next set of Boxes (Light Blue, Purple, Green, Green) will slide forward, followed by Dark Blue Boxes. The conveyor belt has limited space, so only pull marbles when their matching Box is active or imminent.

The primary trap is the right side's upward arrows. Attempting to clear them from the bottom is futile because the arrows point up, meaning the marble above each box must be dropped first to activate it. This requires a top-down approach, which is counterintuitive given the typical bottom-up clearing strategy.

How to Beat Marble Sort Level 681 — Step-by-Step

Phase One: Clear the Left Flank

1. Start by pulling the accessible Light Blue and Purple marbles from the bottom-left cluster, and route them into the front-row Boxes.
2. Clear the loose Yellow, Red, Dark Blue, and Light Blue marbles below the central gap; send Light Blue to the remaining front Boxes and park Dark Blue on the conveyor temporarily.
3. Activate the downward Arrow Boxes on the left (Blue, Pink, Yellow) now that the space below is clear.
4. As Purple and Light Blue Boxes clear, feed the second row of Green Boxes using the Green marbles from the arrows.
5. Break the top-left Crate by clearing adjacent marbles; it will pop open to reveal hidden marbles.

Phase Two: Overcome the Upward Arrow Trap

1. Shift attention to the right side, but avoid the Red and Orange marbles near the bottom-right Crate; they are decoys.
2. Clear the top-right marbles (Blue, Pink, Light Blue, Brown) to unlock the upward arrows.
3. Tap the upward Arrow Boxes (Green, Pink, Yellow, Orange) sequentially, sending Green marbles into the active Green bottom Boxes.
4. Manage the conveyor bottleneck: as Dark Blue Boxes slide forward, feed them using the Dark Blue marbles saved from the left and any new ones from the right.

Phase Three: Shatter the Iced Boxes and Finish

1. Clear remaining right-side marbles to trigger the bottom-right yellow Iced Box, and use marbles from the first crate to thaw the top-left green Iced Box.
2. Pop the final bottom-right Crate by clearing the upward arrows and the yellow Iced Box.
3. Route the hidden marbles from the second crate into the back rows of Pink, Brown, and Orange bottom Boxes to complete the level.

Tips & tricks

• Always clear the left side first; the right side's upward arrows require a different strategy and should be tackled later.
• Keep the conveyor belt as empty as possible; avoid pulling Dark Blue marbles too early to prevent jams.
• Use the Iced Boxes strategically; they can be broken when needed to release additional marbles for matching.

Common mistakes

• Trying to clear the right side from the bottom, which is impossible due to upward arrows.
• Pulling marbles without checking the upcoming bottom Boxes, leading to conveyor overflow.
• Neglecting the Crates and Iced Boxes until the end, causing a shortage of matching colors.

Marble Sort Level 681 FAQ

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