Marble Sort Level 18 funnels you through a narrow gate. Nearly the whole tray is a brick of Mystery Boxes, and two Panels sit in the middle demanding four clears each before the upper half opens. Light Blue and Green carry the early game, and if you start popping Mystery Boxes just to peek, you'll fill the belt with colours that have no home. Order is everything.
The Mystery grid is a rough hexagon with the two Panels buried in it. Below them is your one safe pocket — a Light Blue, a White, and a Green marble resting on three fat 9-marble blocks in Green, Light Blue, and Yellow. That Yellow block is the bait you must not touch.
Marble Sort Level 18 Walkthrough
The front Boxes ask for Dark Blue, Light Blue, Green, and Green. The snag is the Dark Blue on the far left: there's none visible anywhere in the tray, because it's all hiding inside the Mystery Boxes. You have plenty of Light Blue and Green in the lower centre, so feed those first, then hunt the edges for that one Dark Blue. The jam risk is the hidden layer — hunting exposes Orange, Pink, and White that will dead-end on your belt if you're careless.
How to Beat Marble Sort Level 18 — Step-by-Step
Break the front line
- Tap the visible Light Blue at the bottom centre to clear column two's front Box.
- Tap the visible Green beside it to fill columns three and four.
- You still need one more clear. Start tapping the outermost Mystery Boxes on the left side of the grid, hunting for Dark Blue to clear the far-left Box.
- Leave the 9-marble Yellow block alone; the Yellow Boxes are buried behind Dark Blue and Green.
- As you open Mystery Boxes you'll uncover junk like Orange or White. Park a few, but keep three slots open so the Dark Blue clear can land.
Survive the Panel reveal
- On the fourth clear, both Panels vanish and the upper core spills out White, Dark Blue, and Orange.
- The new active Boxes are likely Yellow (column one), Green (column two), Pink (column three), and Light Blue (column four).
- Now tap the massive 9-marble Yellow block in the lower right into the Yellow Box.
- Clear the belt: route any parked junk that matches the new Boxes straight in to reclaim space.
Clear the junk and finish
- The middle layers are heavy with Green, so push any Green left in the upper half.
- Orange is concentrated in the upper mystery grid — don't touch it until an Orange Box is fully clear.
- A massive 9-marble Green block still sits in the centre. Wait for Green Boxes in columns three and four, then drop the whole stack.
- Keep the belt lean and the board collapses on its own.
Tips & tricks
- Four clears is the only opening goal — Light Blue and Green get you most of the way, then one Dark Blue seals it.
- That 9-marble Yellow is a held weapon, not an opener. Release it only when a Yellow Box is active.
- Keep three belt slots free while hunting the edges, or a bad reveal dead-ends the run.
Common mistakes
- Dropping the Yellow block early. It sits on the belt forever and kills the run.
- Letting unplayable Orange or White from the hunt pile up on a full belt.
Marble Sort Level 18 FAQ
Why does my Conveyor Belt flood on Marble Sort Level 18?
You tapped Mystery Boxes blindly and let Orange, Pink, or White pile up on the belt with no Box to catch them. Hunt the left edge for Dark Blue and keep three slots open.
Which color do I clear first on Marble Sort Level 18?
Light Blue, then Green, both in the bottom centre. They clear the front Boxes and put you one Dark Blue clear away from dropping the Panels.
How many moves does it take to clear Marble Sort Level 18?
Around eleven taps across three phases — the Light Blue and Green front, the Dark Blue hunt to drop the Panels, then the Yellow, Green and Orange cleanup.
Do I need boosters to beat Marble Sort Level 18?
No. Hit four front clears and the Panels vanish on their own. Save boosters for boards with hidden Boxes or locks.
What happens if I drop the Yellow block too early?
It lands on the Conveyor Belt with no Yellow Box to receive it, so it sits there and eats the space you need for the four Panel clears.
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