Marble Sort Level 328 Walkthrough & Solution
Marble Sort Level 328 walkthrough: feed the pre-loaded belt, release the yellow key in the center lock, and let numbered crates and cycling Boxes finish the rest.
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Marble Sort Level 328 Walkthrough & Solution
Level 328 Board Overview: The Pre-Loaded Belt

Level 328 opens as a hard board that hands you its conveyor already stacked. The tile tray above is a loose grid of columns with a yellow key parked in the center, and the queue below starts heavy: a long run of Light Pink, then Red, Dark Blue, Green, and Brown marbles waiting at the bottom. Down at the receivers, four rows of Boxes cycle like a belt of their own, and the opening front row asks for Dark Purple, Dark Purple, Light Blue, and Dark Purple.
The real story is in the locks. Scattered across the tray sit grey crates marked with numbers — “3” and “2” — sealing off part of what the board holds. A yellow key already sits in the center column next to the lock mechanism, which means the level wants you to unlock those crates early and use their multi-tile drops to keep the belt moving. Everything else on the board is standard Marble Sort discipline: colors with Boxes in the front row get fed, everything else waits.
The colors that have homes at the start are Dark Purple, Light Blue, Red, Brown, Green, and Light Pink, spread across the four rows of receivers. Those six colors are the entire opening vocabulary — anything else you reveal from the tray is bait until the Boxes cycle forward and ask for it.
The Trap in Marble Sort Level 328
The board is rigged to make you overfeed a belt that is already full. Here is the layout:
- The conveyor starts loaded: Light Pink, Red, Dark Blue, Green, and Brown marbles queue up before you make a single move. Tap colors with no open Box and the belt jams before the first row clears.
- The yellow key is the whole level: it sits in the center column ready to unlock the numbered crates. What hides underneath the “3” and “2” crates stays sealed until that lock is released.
- Only six colors have Boxes at the start: Dark Purple, Light Blue, Red, Brown, Green, and Light Pink. The rest of the tray is a waiting game until the receivers rotate.
- The Boxes cycle, not the board: the front row asks for Dark Purple and Light Blue first, but the rows behind hold Red, Brown, Green, and Light Pink. Feed only what is front and center, or the queue backs up.
Marble Sort Level 328 Step-by-Step Walkthrough
Play the belt in order and let the locks do the heavy lifting. Follow the release order.
Opening: work the belt and reach the key

- Start with the front-row Boxes: feed the Dark Purples and the Light Blue from the pre-loaded belt into their receivers.
- Keep the queue moving with the Light Pink run as the Light Pink Boxes slide forward in the rows behind.
- Tap the Red marbles on the belt only when a Red Box sits in the front row.
- Drop the Green and Dark Blue marbles as their Boxes cycle up — they arrive in small batches, so they finish quickly.
- Reach the center column and release the yellow key. Unlocking the center lock is what starts opening the numbered crates across the tray.
- Feed the Brown pair from the lower belt into the Brown Boxes once they cycle to the front.
Midgame: unlock the crates, clear the blocks
By the middle of the solve the tray has thinned out. A trail of Green tiles clusters through the lower-right of the grid, single Red, Brown, Purple, and Pink blocks sit in the left columns, and Orange and Dark Blue pairs hold the right side. The numbered crates and the yellow key are still in play around the center, and the receivers are now cycling through Green, Purple, Pink, Orange, and White.
- Prioritize the Green trail in the lower-right — it arrives in runs, so feed them back-to-back to finish Green Boxes fast.
- Drop the Orange and Dark Blue pairs into their Boxes as the front row cycles.
- Clear the Red, Brown, and Purple singles out of the left columns before they block the drop funnel.
- Unlock the numbered crates as they free up and bank each one into whichever Box is front and center — a single crate drop pays several tiles at once.
- Take the belt in order: the Light Pink trio, the Red, then the Green run. A full matching batch finishes a Box in one pass and clears belt space.
Cleanup: feed the last singles
The end frame shows the board nearly solved. Most receivers are already full — Red, Blue, and White Boxes are done — and only a handful of tiles remain: Green, Blue, White, Orange, Purple, and Pink singles, plus a couple of leftover locked blocks that never open.
- Play only to the active front row. Feed the remaining Greens, Blues, and Whites as their Boxes slide up and finish the partial receivers.
- Ignore the leftover numbered blocks stuck in the columns — they stay locked, and the level completes without them.
- Cycle the belt one last time and let the final singles drop into the last partial Boxes to clear the board.

Level 328 Tips Recap
- The yellow key in the center column is the real start of the level: release it early to begin unlocking the numbered crates.
- Only feed colors with an open Box — Dark Purple and Light Blue open the board, so check the front row before touching the loaded belt.
- Bank the numbered crates: each one drops several tiles at once, so save them for a matching front-and-center Box.
- In the endgame, ignore the blocks that never unlock — feed the last singles and let the cycling receivers finish the level.
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