Marble Sort Level 603 — Walkthrough and Solution

Level 603 is the nested elevator jam. The real challenge is the central Elevator stack, not the side colors that look easy to clear.

Level603
DifficultyHard
Priority routePurple → Red
Watch forPurple

▶ Video walkthrough of Marble Sort level 603, then the step-by-step below.

⚡ Quick clear

Purple → Red. The belt floods fast. Keep one lane open.

This board type is a nested Elevator puzzle where the middle and top Elevators stay locked until you clear the one below them. The winning move is to work the center column first and leave the Green clusters on the edges untouched until the Dark Green Boxes show up.

At the start, the bottom queue shows Purple, Red, Yellow, and Blue from left to right. The Top Tray has a central column of three Elevators, each a bordered 4-box structure, stacked one above the other. The lowest Elevator blocks access to the middle one, and the middle blocks the top. On the left side of the board you see loose clusters of Green, Red, and Yellow. On the right side you see Green, Orange, Red, and Brown. The upper corners have grey Mystery Boxes. The exposed clusters on the far left and far right are mostly Green, which is the bait.

Marble Sort Level 603 Walkthrough

The front-row Boxes demand Purple, Red, Yellow, and Blue in that order. The most accessible marbles on the board are Green, but the Dark Green Boxes do not appear in the bottom queue until later. So the correct opening is to feed the bottom Boxes with the Purple and Blue clusters that sit right above the drop chute, then pull Red and Yellow from the lower-left and lower-right sides, and completely ignore the outer Green marbles.

The central Elevator holds the key. Once you clear the initial Boxes, you can open the lowest Elevator and release its Red, Purple, and Pink marbles. That unlocks the middle Elevator and eventually the top one. Do not tap the upper Mystery Boxes early because they drop random colors that can fill the belt.

How to Beat Marble Sort Level 603 — Step-by-Step

Phase one: Clear the core

  1. Tap the exposed Purple and Blue marble clusters directly above the drop chute to feed the front-row Purple and Blue Boxes.
  2. Pull marbles from the lower-left Red and Yellow clusters, and also from the lower-right Red cluster, to feed the Red and Yellow Boxes.
  3. Do not touch the Green clusters on the middle-left and middle-right edges; leave them for later.
  4. After the first Boxes are cleared, tap the accessible marbles inside the lowest central Elevator to empty it completely.
  5. Avoid the upper Mystery Boxes for now.

Phase two: Work the middle

  1. Once the first Elevator is empty and the bottom queue slides forward, you will see Dark Green, Orange, and another Purple Box appear.
  2. Now you can safely tap the outer Green clusters you ignored earlier, because Dark Green Boxes are active. Route those Green marbles into the Dark Green Boxes.
  3. Pull the Orange marbles from the middle Elevator to clear the Orange Box.
  4. Clear the remaining White and Pink marbles from the middle Elevator; this unlocks the top Elevator.
  5. Keep an eye on the Conveyor Belt. If you have extra Blue or Brown marbles, keep at least three belt slots open so you can still make moves.

Phase three: Finish the top

  1. Dismantle the top Elevator by tapping its Brown, Orange, and White marbles, but only when the matching bottom Boxes are active.
  2. After the center is clear and you have belt space, tap the top-left Mystery Box. Watch what color it releases before you tap the next one.
  3. Clear the remaining Mystery Box and route all final colors into the correct Boxes.
  4. Do not rush the last taps; wait for each sorting animation to finish so you do not accidentally send a marble onto a full belt.

Tips & tricks

  • Focus on the central Elevator column from the start; the outer Green clusters are a decoy.
  • Always match the color you release with an active bottom Box to avoid jamming the belt.
  • When you open a Mystery Box, release one at a time and check the color before proceeding.

Common mistakes

  • Tapping the outer Green clusters too early, which fills the belt with marbles that have no matching Box.
  • Ignoring the order of the bottom queue and clearing colors out of sync.

Marble Sort Level 603 FAQ

Why does my Conveyor Belt flood on Marble Sort Level 603?

The belt floods when you release Green marbles too early, before the Dark Green Boxes appear, and also if you tap Mystery Boxes without enough space.

Which color do I clear first on Marble Sort Level 603?

Clear the Purple and Blue clusters above the drop chute first to feed the front-row Boxes, then handle Red and Yellow.

How many moves does it take to clear Marble Sort Level 603?

There is no fixed move count, but an efficient run takes around 80 to 100 moves if you avoid unnecessary taps.

Do I need boosters to beat Marble Sort Level 603?

Boosters are not required, but a shuffle booster can help if you accidentally jam the belt with Green marbles.

What happens if I clear the outer Green clusters early on Marble Sort Level 603?

If you clear the outer Green clusters early, they will sit on the Conveyor Belt with no matching Box, blocking space and making it nearly impossible to sort the later colors.

Get the Official Game

⬇ Download Marble Sort

Back to the full Marble Sort level list.