Marble Sort Level 339 Walkthrough & Solution

Level 339 Board Overview: The Locked Five-Column Tray

Level 339 is a hard board that hides most of its plan behind gates. The play area is a five-column tray built from tiles and blocks rather than plain marbles: chains with padlocks cap the outer columns, a grey mystery tile hides the top of another stack, and numbered markers sit ready to pay out bonus tiles the moment you free them. Between them sit arrow tiles, gear tiles, and colored blocks that shift the way the columns drop.

What is honest at the start is small. The front of the level runs through the bottom receivers, which ask for a few open colors right away, while locked receiver Boxes sit waiting for keys. In the center column two green keys hang within reach, and a loaded belt at the bottom of the screen already carries Red, Green, Orange, and Pink marbles toward the queue.

Nothing about the opening is a straight line: unlock before you can feed, reveal before you can plan, and keep the belt from jamming on colors whose Boxes are still padlocked.

The Trap in Marble Sort Level 339

The board is rigged to make you burn your taps on locked and hidden tiles. Here is the layout:

• Chains and padlocks seal the columns: the outer columns of the tray start chained, and locked receiver Boxes sit at the bottom waiting for the green keys. Tap a chained stack before unlocking it and nothing moves.
• Mystery ’?’ tiles block the tops: grey mystery tiles and locked slots hide what sits beneath them. You cannot plan the top of the board until you reveal it.
• Numbered markers count double: tiles marked ‘1’ and ‘2’ drop more than a single tile when they land, so they are worth more than the stack underneath them — but only if a matching Box is open.
• The belt runs ahead of your Boxes: Red, Green, Orange, and Pink arrive at the front of the queue early, but not all of them have receivers yet. Feed them too soon and the belt jams before the locks open.

Marble Sort Level 339 Step-by-Step Walkthrough

Unlock before you commit. Follow the release order.

Opening: grab the keys, feed the open colors

1. Work the center column first and collect the green keys sitting there — every locked Box and chained stack on the board is waiting on them.
2. Tap the colored blocks and marbles whose receiver Boxes are already open at the bottom. Feed only colors that have an unlocked home right now.
3. Use the keys to unlock the padlocked receiver Boxes one at a time, matching each key to the lock it opens.
4. Keep the belt moving with the open colors only — leave the Red, Green, Orange, and Pink waiting in the queue until their Boxes unlock.
5. Do not tap the chained outer columns yet. Their tiles stay sealed until the matching locks are cleared.

Midgame: reveal the stacks, bank the markers

Once the first receiver Boxes clear, the locked slots start to open and the tray shifts hard. The numbered markers and mystery tiles that capped the columns are now in reach, and the bottom receivers begin asking for the colors that have been waiting in the queue.

6. Reveal the grey mystery tiles one at a time. If the tile underneath matches an open Box, drop it; if not, leave the column and come back.
7. Bank the numbered markers as soon as a matching receiver sits open — each one clears several tiles at once and empties a column fast.
8. Follow the arrow tiles when they point into open Boxes; they route the drop and can chain two tiles in one tap.
9. Let the gear tiles and colored blocks cycle through as their receivers open. Work each column down one tile at a time.
10. Prioritize columns that expose two matching tiles in a row — clearing them opens the tray and unlocks the next wave of receiver Boxes.

Cleanup: clear the padlocked stragglers

With the columns thinned out, the level becomes a straight finishing line. The end frame shows the tray stripped down to a handful of blocks and marbles, the receiver Boxes still taking their final tiles, and the belt still running.

11. Play only to the active front row from here — every remaining tile is a single waiting for its Box to slide forward.
12. Let the queue cycle the last Reds, Greens, and Oranges as their receivers open. Do not chase colors whose Boxes have already closed.
13. Finish the padlocked Boxes last as the final keys cycle onto the belt, and let the tray empty on its own.

Level 339 Tips Recap

• Keys come first: the center column holds the green keys that every lock on the board needs — unlock before you feed.
• Only play colors with an open receiver Box; Red, Green, Orange, and Pink in the queue are bait until their locks clear.
• Reveal the mystery tiles before planning combos, and bank the numbered markers when a matching Box is front and center.
• In the endgame, just cycle the belt and feed the last singles — the padlocked Boxes finish last.