Marble Sort Level 212 — Walkthrough and Solution

Level 212 is the double lock and key trap. The double lock and key setup in the center of the board is the main obstacle, and the key to beating Marble Sort Level 212 is to clear the front row in the exact order that matches the bottom receiving boxes, avoiding the decoy Light Blue box until it becomes useful.

Level212
DifficultyMedium
Priority routeGreen → Pink
Watch forGreen

▶ Video walkthrough of Marble Sort level 212, then the step-by-step below.

⚡ Quick clear

Green → Pink. The lock won't open without its key.

Marble Sort Level 212 presents a board where the central mechanism is a double lock-and-key puzzle, and the top tray is almost entirely covered by Mystery Boxes. The solution is to carefully clear the accessible front rows to release the keys, then manage the resulting cascade of new marbles.

The top tray is shaped like an inverted funnel, but the top is blocked by eight grey Mystery Boxes, hiding their colors until later. Below this, two horizontal locks are arranged: the top lock's key points right, and the bottom lock's key points left. These locks are attached to purple, blue, and orange boxes. Flanking this structure are two blue-red Gift Boxes on the far left and right edges. The front row of the top tray contains, from left to right: Light Green, Light Blue, Light Green, and White. The bottom receiving boxes are arranged in four columns: Column 1 needs Light Green, Column 2 needs Orange, Column 3 needs Pink, and Column 4 also needs Pink.

Marble Sort Level 212 Walkthrough

The immediate demands of the bottom boxes are Light Green, Orange, Pink, and Pink. However, the front row of the top tray offers Light Green, Light Blue, Light Green, and White. The Light Blue box is a trap because no bottom box currently accepts it, so tapping it early would send an unmatchable marble onto the conveyor belt. The correct approach is to ignore Light Blue and focus on the boxes that match the active demands.

The key insight is that the front row of the top tray does not align with the bottom demands except for the Light Green boxes. The Pink boxes are in the second row, so you must reach them by clearing the front row strategically. The bottom boxes will shift after each clear, so you must adapt quickly.

How to Beat Marble Sort Level 212 — Step-by-Step

Phase one: Clearing the front row safely

  1. Tap the Light Green box on the far left of the front row to fill Column 1.
  2. Tap the Light Green box on the third position of the front row to fill Column 1 again (or another Light Green demand if it appears).
  3. Now look at the second row: there are two Pink boxes. Tap the left Pink box to fill Column 3.
  4. Tap the right Pink box to fill Column 4.
  5. After clearing those, a White demand appears in Column 4. Tap the White box on the far right of the front row to fill it.
  6. Now the front row is cleared except for the Light Blue box. The bottom boxes will now show an Orange demand. Look for an Orange box in the third row, and tap it to fill Column 2.

Phase two: Unlocking the center

  1. Once the front row is gone, the lock mechanism becomes exposed. Clear the box directly holding the bottom lock to release it, causing the boxes above to drop.
  2. Clear the boxes adjacent to the Gift Boxes to trigger them. They burst open, releasing four new boxes each, adding colors like Purple, Yellow, and Red to the board.
  3. The bottom receiving boxes will now demand Purple, Green, and Orange. Prioritize clearing Purple boxes to unlock the top key.
  4. Once the top key is released, the entire back half of the board slides down, revealing the Mystery Boxes' contents.

Phase three: Managing the final reveal

  1. As the Mystery Boxes reveal, you will see Red, White, Yellow, and Green marbles. Check the bottom boxes for new demands, which will likely include Red and Yellow.
  2. Clear the Red boxes first because they block access to the White and Green boxes at the back of the top tray.
  3. Continue matching the revealed colors to the bottom demands, working from front to back, until the board is empty.

Tips & tricks

  • Always match the bottom box demands before anything else; the bottom boxes dictate your moves.
  • Keep an eye on the Conveyor Belt length; if it fills up, you lose, so avoid tapping boxes that don't match any current demand.
  • When the Mystery Boxes reveal, plan your clears to avoid stranding colors on the Conveyor Belt.

Common mistakes

  • Tapping the Light Blue box early, which fills the belt with an unmatchable marble.
  • Ignoring the shifting bottom demands and clearing boxes out of order.
  • Focusing on one column for too long, causing the Conveyor Belt to fill with other colors.

Marble Sort Level 212 FAQ

Why does my Conveyor Belt flood on Marble Sort Level 212?

Your Conveyor Belt floods because you tap boxes that don't match any current bottom box demand, especially the Light Blue decoy in the front row, which sends an unmatchable marble onto the belt.

Which color do I clear first on Marble Sort Level 212?

You should clear Light Green first because two Light Green boxes are in the front row and match the initial bottom box demand in Column 1.

How many moves does it take to clear Marble Sort Level 212?

The exact number of moves varies based on the random Mystery Box contents, but with perfect play you can clear the board in roughly 40-50 taps, depending on the color distribution.

Do I need boosters to beat Marble Sort Level 212?

No, boosters are not required if you follow the correct order and avoid the Light Blue trap, but they can help if you make a mistake and need to clear the belt.

What happens if I tap the Light Blue box early on Marble Sort Level 212?

If you tap the Light Blue box early, it will drop an unmatchable marble onto the Conveyor Belt, consuming space and potentially causing a game over if the belt fills before you can match it later.

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