Marble Sort Level 13 is deceptive from the first frame. Yellow, Purple, Dark Blue, and Pink are what you juggle, but the board hides what you need behind layers of useless marbles. The tray's front row offers four reachable stacks — Green, Light Blue, Pink, Yellow — and behind them sit an inverted L of seven grey Mystery Boxes. Right in the middle, a Tunnel with a countdown of 3 waits for its three clears.
The tray columns tell the story. The far-left leads Green, then Purple, then Yellow. The mid-left leads Light Blue, then Dark Blue, then the Tunnel entrance. The mid-right leads Pink, then Purple, then Yellow. The far-right is your only lifeline: Yellow, then another Yellow, then Light Blue.
Marble Sort Level 13 Walkthrough
Your front Boxes ask for Dark Blue, Yellow, Yellow, Purple. Only one colour in the tray's front row matches an open Box — the rest is bait. There's no Green, Light Blue, or Pink Box anywhere, so tapping those just parks marbles on the belt. You have to surgically extract the Dark Blue and Purple from the second row while keeping the belt as empty as possible, and land three clears to pop the Tunnel open.
How to Beat Marble Sort Level 13 — Step-by-Step
Survive the colour mismatch
- Tap the far-right Yellow block. It drops into the Yellow Box and clears it.
- A Purple Box slides up on the right, so now you need Purple.
- Tap the mid-right Pink block. It's a sacrifice — park it on the belt to uncover the Purple behind it.
- Tap that newly revealed Purple block into the bottom-right Purple Box.
- For the far-left Dark Blue Box, go to the mid-left column. Tap the Light Blue block to the belt.
- That exposes the Dark Blue. Tap it down into the far-left Dark Blue Box.
Trigger the Tunnel and Mystery Boxes
- Those clears count the Tunnel down to zero. It ejects a block of Pink, and a new Pink Box appears on the bottom-left.
- The grey Mystery Boxes start flipping, revealing Dark Blue on the left and Green on the right.
- Tap the new Pink block from the Tunnel — it combines with the Pink already on your belt and drops into the new Pink Box.
- Tap the Green block on the far left. A Green Box has cycled up, so send it down.
- You still have Light Blue stuck on the belt from earlier. Tap the Light Blue at the back of the far-right column to complete the set and clear the new Light Blue Box.
Clear the final back rows
- Tap the Dark Blue revealed by the left Mystery Boxes into the waiting Dark Blue Box.
- Tap the Green revealed by the right Mystery Boxes into the final Green receiver.
- Sweep up the remaining Yellow and Purple. With the belt mostly clear, drop them in any order to finish.
Tips & tricks
- Only the far-right Yellow is a safe first tap. Everything else in the front row is bait.
- Use the belt as a temporary holding zone — parking Pink and Light Blue is the intended route, not a slip.
- The Tunnel's Pink drop plus your parked Pink make one clean clear, so don't waste the parked one early.
Common mistakes
- Blind-tapping the Green, Light Blue, or Pink up front. None has a Box, so they clog the belt.
- Spending your parked Pink before the Tunnel drops its Pink — you'll end up one set short.
Marble Sort Level 13 FAQ
Why does my Conveyor Belt flood on Marble Sort Level 13?
You tapped the Green, Light Blue, or Pink block in the front row before any matching Box existed. Only the far-right Yellow is safe. Dig out Dark Blue and Purple from the second row instead.
Which color do I clear first on Marble Sort Level 13?
The far-right Yellow block. It's the only front-row colour with a matching Box, and clearing it starts the chain that unlocks the Purple and Dark Blue you need.
How many moves does it take to clear Marble Sort Level 13?
Around eleven taps across three phases — the Yellow and sacrifice plays, the Tunnel's Pink drop and Mystery reveals, then the final Dark Blue and Green cleanup.
Do I need boosters to beat Marble Sort Level 13?
No. Park the Pink and Light Blue on the belt, let the Tunnel deliver the rest, and the board clears. Save boosters for boards with hidden Boxes or locks.
What happens if I tap the front Green or Light Blue early?
They drop onto the Conveyor Belt with no Box to catch them, sit there, and choke the space you need for the Dark Blue and Purple dig.
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