Marble Sort Level 240 — Walkthrough and Solution

Level 240 is the hidden box and lock trap. The hidden Boxes hide Yellow and Purple early — don't tap them until your lower queue shows their receivers.

Level240
DifficultyMedium
Priority routePink → Green
Watch forPink

▶ Video walkthrough of Marble Sort level 240, then the step-by-step below.

⚡ Quick clear

Pink → Green. Hidden boxes turn every tap into a guess.

Marble Sort Level 240 is a board that appears calm at first glance but hides a nasty surprise in its upper half. The key is to clear the lower rows methodically, unlocking the right side to grab the Key, then breaking the Lock to safely release the Yellow and Purple marbles. If you tap the Hidden Boxes too early, your belt will jam.

The board layout has a Top Tray with many grey question marks. On the far left and right edges are two blue Tunnels, each marked with a "3", meaning three layers of Boxes will push forward when triggered. In the bottom center of the Top Tray, a white Surprise Bag and a red Surprise Bag are placed between a dark green Arrow Box that points right and a light green Arrow Box that points left. Your starting bottom Boxes are White, Dark Green, Teal, and Pink, with a queue behind containing Dark Blue, Lime Green, Red, and more White.

Marble Sort Level 240 Walkthrough

The front row of bottom Boxes demands White on the far left, Dark Green next to it, Teal in the middle, and Pink on the far right. Behind them, the queue holds Dark Blue, Lime Green, Red, and additional White. The main trap is the massive stash of Yellow and Purple marbles hidden in the upper grey blocks; there are no Yellow receivers in the first four rows, so dropping them early will choke the Conveyor Belt.

The imbalance is that the right side holds the Key to a Lock on the top left, which protects three horizontal slots. You must reach that Key without triggering the Tunnels or the central Hidden Boxes prematurely.

How to Beat Marble Sort Level 240 — Step-by-Step

Phase one: Clear the lower center

  1. Tap the visible Pink box on the middle-left side to send its contents to the Pink bottom Box on the far right.
  2. Tap the white Surprise Bag at the bottom center to feed the White bottom Box on the far left.
  3. Activate the dark green Arrow Box that points right, guiding its marbles into the Dark Green receiver.
  4. Do not touch the light green Arrow Box yet because no Lime Green receiver is in the front row; wait until the Dark Green Box clears out.

Phase two: Unlock the right side

  1. Peel back the Hidden Boxes on the right side one at a time, matching their colors to the new bottom Boxes that cycle in (Red, Dark Blue, Lime Green).
  2. Avoid the blue Tunnels until your Conveyor Belt has at least four empty slots, as each Tunnel hides three Boxes.
  3. Continue up the right column until you expose the orange box that holds the Key.
  4. Wait for an Orange bottom Box to appear in the front row, then tap the Key to release it.

Phase three: Break the Lock and finish

  1. Once the Key is secured, the Lock on the top left breaks, revealing three trapped Boxes.
  2. Check their colors and drop them into matching receivers immediately to open the left side.
  3. Now tap into the central Hidden Boxes, expecting Yellow and Purple marbles to fall; by now, your queue should have cycled to show Yellow and Purple bottom Boxes.
  4. Sweep the remaining Tunnels, starting with the left side, letting the hidden Boxes push forward and matching them to finish the board.

Tips & tricks

  • Always have at least four empty belt slots before touching a Tunnel.
  • Keep an eye on the bottom Box queue to know when it's safe to release Yellow and Purple.
  • Clear the right side completely before engaging the Lock to avoid unexpected colors.

Common mistakes

  • Dropping Yellow early because you tapped Hidden Boxes too soon.
  • Triggering the blue Tunnels without enough belt space.
  • Ignoring the bottom Box cycle and missing the window to use the Key.

Marble Sort Level 240 FAQ

Why does my Conveyor Belt flood on Marble Sort Level 240?

Because you tapped the Hidden Boxes that release Yellow and Purple before your bottom queue had receivers for them.

Which color do I clear first on Marble Sort Level 240?

Clear the Pink box on the middle-left first, then the White Surprise Bag at the bottom center.

How many moves does it take to clear Marble Sort Level 240?

There is no fixed move count; the number varies depending on how efficiently you clear the Boxes.

Do I need boosters to beat Marble Sort Level 240?

No, but using a booster like the Undo or Shuffle can help if you accidentally release Yellow early.

What happens if I tap the blue Tunnels too early on Marble Sort Level 240?

You will unleash three layers of Hidden Boxes that likely contain colors you cannot match, jamming your belt.

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