Marble Sort Level 39 — Walkthrough and Solution

Marble Sort Level 39 greets you with a wall of unknowns and dares you to click badly. The board is a jagged L-shape dominated by Red, Yellow, and Brown, but the real threats hide out of sight — a pair of Tunnels marked 3 on the edges and a field of grey Mystery Boxes across the middle rows.

The front row of Boxes reads Red, Brown, Orange, and Brown, and that is your to-do list. Along the front edge of the Top Tray you get a Brown, a Light Blue, a Purple, and a doubled Yellow on the far right. The Red marbles sit buried in rows two and three, and the Orange is pinned behind the doubled Yellow on the right wing, which forces you to use the belt as a holding pen.

Marble Sort Level 39 Walkthrough

Yellow looks like a quick match since there are two up front, but that is bait — the Yellow Box is buried one row down, trapped behind a Brown one. Two Tunnels marked 3 hold six unrevealed clusters, and five visible Mystery Boxes act as roadblocks in the centre.

You have to shave away the exposed Red and Green blocks to force those Mystery Boxes to show their colours, all while keeping the belt clear enough to absorb the surprise drops that arrive later.

How to Beat Marble Sort Level 39 — Step-by-Step

Break the front-line traps

1. Keep your hands off the Light Blue and Purple in the front centre — they dead-end the run on the spot.
2. Tap the front-left Brown to feed one of the front-row Brown Boxes.
3. Tap the front-right Brown to clear the second Brown Box and open access to the Yellow Box behind it.
4. Time to reach the Orange. Fire the two front-right Yellows down onto the belt.
5. Because the right-side Brown Box is already cleared, the Yellow Box is now active, so those Yellows sort themselves and free your belt.
6. Once that right wing is open, send the exposed Orange into the Orange Box waiting in the front row.

Trigger the hidden reveals

That front-left Red Box has been stalling the whole left side, and now you can finally reach it.

1. Over on the middle-left of the tray, Red marbles are now in the open — tap them to clear the Red Box.
2. That pulls a Green Box into play, so tap the exposed Green in the centre.
3. With Green gone, the grey Mystery Boxes in the centre trigger and reveal their colours.
4. Watch the belt closely. Those Mystery Boxes tend to show Red or Light Blue, so only tap them if their matching Box has moved up to the front row.
5. If one flips to Purple, leave it — the Purple Box sits far down on the right.

Manage the Tunnel drops

1. The left Tunnel eventually drops a Light Blue block — only pull it once your Light Blue Box is live.
2. The right Tunnel releases Red, Light Blue, and Purple all together.
3. Take the Red first — the lower Boxes lean on Red and Light Blue through the back half.
4. Save Purple for the very last moment — its Boxes wait at the back, and pulling it early strands it for the entire run.
5. Mop up the last Light Blue and Orange leftovers to close it out.

Tips & tricks

• The two front Yellows are bait until the right Brown Box is gone. Clear the Browns first and the Yellows sort themselves.
• Use the belt as a waiting room on purpose here — dumping the front Yellows is how you reach the Orange behind them.
• Leave any revealed Purple alone. It has no Box until the very back rows, so it would just steal a slot all game.

Common mistakes

• Touching the front-centre Light Blue or Purple. Both dead-end the run because their Boxes are nowhere near the front row.
• Pulling Purple from the right Tunnel early. It sits on the belt all game and threatens a jam at the finish.

Marble Sort Level 39 FAQ

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