Marble Sort Level 347 Walkthrough & Solution

Level 347 Board Overview: The Marked-Stack Hard Tray

Level 347 plays the block-grid variant of Marble Sort: vertical stacks of tiles feed down toward a receiver row at the bottom, with a loading queue feeding new tiles in above the wells. The level banner flags it Hard with a skull icon, and the tray earns that label — the left side of the board is only half readable.

Two special-tile mechanics own the opening. The far-left column stacks a Dark Red tile over a Light Purple tile over two grey ’?’ mystery tiles, with a Purple and a Green riding lower in the same lane. The second column carries Pink over Yellow beneath a teal marker stamped “1” — a countdown tile that releases once and then sits spent. A pair of Light Pink tiles fills the third column, while the fourth column stacks two more Dark Reds above Bright Green, Blue, and Red at its base.

The queue and receivers make the actual promises. The loading line opens on a run of Green tiles feeding straight toward a bottom row that is leaning Green, with Orange, Light Pink, Yellow, Dark Red, and White asks stacked in the wells behind it. Nothing about the opening is safe to rush: every left-column tap either reveals a mystery or spends your only numbered marker.

The Trap in Marble Sort Level 347

The tray is rigged to make you spend the marker before you can place its color. Here is the layout:

• The ’?’ tiles hide the middle of the left column. Two grey mystery tiles sit stacked in the far-left lane over a Purple and a Green. Every reveal is a gamble until you see the color underneath.
• The “1” marker is a one-shot commitment. The teal marker in the second column releases on a single tap and then stays on the board as a spent “0” block — you can see the husks in later frames. Start it with no open receiver and you waste the column’s best drop.
• The queue opens Green but the midgame mixes everything. What starts as a Green run cycles into Blue, Yellow, White, Lime, and Pink as the solve goes on. A color riding the belt does not mean a receiver is asking for it.
• The receiver row rotates. The opening asks give way to Purple, White, Blue, Yellow, Red, Pink, and Green asks as wells complete — feed a color whose well just closed and it parks in the queue forever.

Marble Sort Level 347 Step-by-Step Walkthrough

Play the visible Greens, spend the marker only when it pays, and let the mystery reveals come one at a time. Follow the release order.

Opening: run the Greens, read the left column

1. Feed the opening queue’s Greens straight into the Green asks in the bottom row — they arrive in small batches, so keep tapping as each one lands instead of stockpiling them.
2. Clear the Dark Red tiles capping the left columns only while a Dark Red ask is live in the front wells; the left column’s Dark Red sits directly above the mystery tiles, so every tap there moves you closer to a ’?’ reveal.
3. Peel the first ’?’ mystery tile in the far-left lane and drop the reveal only if the receiver row is asking for that color. If it is not, leave the second mystery tile alone for now.
4. Keep the Light Pink pair in the third column untouched until a Light Pink ask surfaces — the well is there, it just is not front and center yet.
5. Do not tap the teal “1” marker yet. One release is all it gives you, so wait until its column is cleared to the marker and a matching receiver is open.

Midgame: spend the marker, cycle the receivers

By the middle of the solve the tray has thinned and the receiver row has cycled — the asks now run through Purple, White, Blue, Yellow, Red, Pink, and Green. The numbered marker has ticked down to its spent “0” husk, and the queue has gone from pure Green to mixed Blue and Yellow with more colors feeding in.

6. The moment a receiver matches the column under the “1” marker, tap it — it releases its payload in one go and leaves the dead “0” block behind.
7. Take the queue in its runs: Yellow and Blue arrive in groups, and a full matching run finishes a well in a single pass and clears belt space fast.
8. Keep peeling the second mystery ’?’ tile when the first reveal proved playable; if a color has no open ask, let the tile sit — the queue will cycle back to it.
9. Feed Pink and Light Pink as their asks rotate up; they cluster in the middle stacks and arrive in pairs, so catch them while the wells are showing.
10. Ignore the spent “0” marker once it is exposed — it holds nothing and only occupies lane space until the column empties naturally.

Cleanup: drain the last tall stacks

The end frame shows the level nearly complete: the bottom wells are packed with finished sets while the tray holds just two tall stacks — one built from Blue over Yellow over White, the other a Light Blue-Dark Purple-Purple stack still capped by a last ’?’ mystery tile. The queue above runs Yellow, Lime, Green, White, and Pink with Red at the loading mouth.

11. Feed the last ’?’ reveal only when its color matches an open well; the mystery cap is the only unknown left on the board, so do not waste it on a closed receiver.
12. Work the Blue-Yellow-White stack from the top down, moving each tile onto its matching open ask as the queue brings the colors around.
13. Let the Lime, Green, White, and Pink runs in the queue do the finishing work — they ride in batches, so a matching run can clear its well in one pass.
14. Play only to the active front row from here; the last tiles drop as their wells open and the level completes the moment the tray empties.

Level 347 Tips Recap

• The “1” marker releases exactly once and leaves a spent “0” husk — never tap it without an open receiver for its color.
• Treat the twin ’?’ mystery tiles as gambles: reveal one, place it only if asked, and reassess before touching the second.
• The queue opens on Greens but mixes Blue, Yellow, White, Lime, and Pink later — feed runs only into wells that are actually asking.
• The endgame is two tall stacks and a rotating belt: drain from the top down and let the batch runs finish the last wells.