Stuck on Marble Sort Level 780? You're not alone. This level looks like a colorful mess, but the entire puzzle revolves around one thing: the numbered Mystery Box sitting right in the center. The board is split by a big T-shaped block and two decorative pillars, funneling everything into a tight space and making jams a constant threat.

The main colors you’ll be wrestling with are a ton of light and dark greens, purples, yellows, and reds. Your goal is to clear five specific bottom Boxes as efficiently as possible to reveal the Mystery Box, which holds the key to unlocking the rest of the board. Ignore this rule, and the Conveyor Belt will fill up before you know it.

The T-Shaped Board and Central Mystery Box in Marble Sort Level 780

The layout of Marble Sort 780 is designed to mislead you. You have a Top Tray crowded with marbles, especially light greens, packed into every corner. The T-shaped obstacle in the middle creates narrow channels, forcing you to be very careful about what you release. Marbles dropped from the center-left and center-right sections will all compete for the same space on the Conveyor Belt.

The most important feature is the Mystery Box in the top-middle section, marked with a "5." This means you must clear five bottom Boxes before it reveals its contents. The entire strategy for Marble Sort Level 780 is about choosing the right five Boxes to clear first. Picking the wrong ones will force you to release a flood of unneeded marbles, jamming the Conveyor Belt and blocking access to the colors you actually need.

The bottom Boxes are arranged in five columns. You’ll notice two Yellow Boxes stacked in the middle column and two Dark Green Boxes on opposite ends of the sorting area. It’s tempting to go for these, but the real key is finding the path of least resistance. The first few moves must prioritize clearing Boxes whose marbles are sitting right at the top, without digging too deep.

Marble Sort Level 780 Step-by-Step Walkthrough

This level is all about a precise opening sequence. Follow these steps to control the flow, unlock the Mystery Box, and clear the board without getting jammed.

Initial Clears and Managing the Conveyor Belt

Your first goal is to clear five Boxes to activate the Mystery Box. Don't get baited by colors that look easy but are trapped. We will focus on the Boxes whose marbles are directly accessible from the top layer.

Clear the First Yellow Box: Start with the most obvious move. There is a Yellow Box in the third column from the left. A single yellow marble is sitting in the middle section of the Top Tray. Release it to clear this Box immediately. This is your first of five clears.
Target the Dark Red Box: Next, focus on the Dark Red Box in the fourth column. A dark red marble is available right next to where the yellow one was. Drop it down to get your second clear.
Go for the Far-Right Dark Green Box: Now, turn your attention to the far-right column. There's a Dark Green Box at the top. You can see a dark green marble in the top-middle section of the Top Tray. Send it down. That’s your third clear.
Clear the Second Dark Green Box: The second column from the left also has a Dark Green Box. Use another accessible dark green marble from the top-middle area to clear it. Be mindful of the Conveyor Belt space, but this should be a clean shot. This is clear number four.
Finish with the Pink Box: For your fifth and final clear to unlock the main obstacle, target the Pink Box in the first column. There are pink marbles on both the far-left and far-right sides of the Top Tray. Release the ones needed to clear this Box.

Once that fifth Box drops, the Mystery Box in the center will open, revealing new marbles.

Unlocking the Mystery Box and Clearing the Middle

With the Mystery Box open, the board state changes completely. The marbles it reveals are crucial for solving the second half of the puzzle. Now you have access to more colors and can start working on the more difficult Boxes.

Assess the New Marbles: Take a moment to see what colors the Mystery Box gave you. These will likely be needed for the remaining Boxes, such as the purple, light blue, or brown ones.
Clear the Top Layers: Your priority is now to clear the upper sections of the Top Tray. Focus on matching the newly available marbles to their corresponding Boxes. This is the time to clear the light greens, teals, and other colors that were previously blocked.
Clear the Light Green Box: You’ve probably noticed the huge amount of light green marbles. The Light Green Box is at the very bottom of the fourth column. You had to clear the dark red and brown Boxes above it first. Now is the time to send all those light greens down.
Manage the Bouncy Marbles: As you clear the main sections, you’ll finally gain access to the rows of bouncy-looking marbles at the very bottom. These are needed for the final Boxes, including the white, blue, and purple ones. Release them carefully, as they can quickly fill up the Conveyor Belt.

Finishing the Final Columns in Marble Sort 780

The end of Marble Sort Level 780 is a cleanup operation. You've broken the back of the puzzle by unlocking the Mystery Box. All that's left is to sort the remaining colors without making a mistake.

Focus on One Column at a Time: Try to complete one vertical stack of Boxes before moving to the next. This helps keep the Conveyor Belt organized. The middle column with the White Box and the left column with the purple Boxes are good candidates to finish off.
Use Boosters if Needed: If the Conveyor Belt gets crowded with a bad mix of colors, don't hesitate to use a Booster like the Hammer or a shuffle to get out of a jam. The bouncy marbles at the end can create awkward situations.
Clear the Final Boxes: Send down the last of the marbles to their homes. The final clears will likely be the purples, blues, and whites that were buried at the bottom of the board from the start.

By following this order, you strategically dismantle the board's defenses, turning a chaotic level into a manageable sorting task. Good luck

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