Marble Sort Level 803 — Walkthrough and Solution

Level 803 is cracking the triple iced boxes. The triple Iced Boxes are the real threat in Marble Sort Level 803, but timing their release is the key to victory.

Level803
DifficultyHard
Priority routeGreen → Purple
Watch forGreen

▶ Video walkthrough of Marble Sort level 803, then the step-by-step below.

⚡ Quick clear

Green → Purple. Only drop a colour when its box is ready.

Marble Sort Level 803 presents a 7x5 Top Tray with three Iced Boxes, two at the top corners and one in the center, guarding a bubbly green marble. The bottom area has four tall columns of Boxes. The solution hinges on clearing the top layer of Boxes first, prioritizing Light Green and Dark Blue, while leaving the Iced Boxes untouched until the right moment.

The top row of Boxes in the bottom columns, from left to right, holds Dark Green, Light Green, Dark Blue, and Light Green. The Top Tray also contains marbles in Light Green, Dark Green, Dark Blue, Pink, and White, with bubbly versions of Dark Blue, Pink, and Green at the very bottom row. The central Iced Box drops two Light Green marbles, while the top-left and top-right Iced Boxes each drop two White marbles. No White Boxes are available initially, making those Iced Boxes traps.

Marble Sort Level 803 Walkthrough

The initial focus must be on the Light Green Boxes in the bottom columns. The far-right column has a Light Green Box on top, and the second-from-left column also has a Light Green Box on top. The Dark Green Box on the far left and the Dark Blue Box in the third column are secondary priorities.

The critical insight is that the central Iced Box is the only one that should be opened early, as it feeds Light Green marbles that can be immediately used. The White Iced Boxes must remain sealed until deep into the level when White Boxes are finally exposed.

How to Beat Marble Sort Level 803 — Step-by-Step

Phase one: Clearing the top layer

  1. Do not tap any Iced Box.
  2. Find the Light Green marble at the top-left of the Top Tray and send it down to the far-right Box.
  3. Locate the Light Green marble at the top-right of the Top Tray and route it to the same Box.
  4. Grab the Light Green marble from the third row down on the far-left column of the Top Tray and guide it to that Box, clearing it and revealing a Pink Box underneath.
  5. Now go to the Dark Green Box on the far left. There is a Dark Green marble in the third row on the left side of the Top Tray; drop it onto the Dark Green Box.
  6. Find the Dark Blue marble in the center of the Top Tray and deliver it to the Dark Blue Box in the third column.

Phase two: Using the central Iced Box

  1. Pop the central Iced Box, which releases two Light Green marbles onto the Conveyor Belt.
  2. Immediately send both Light Green marbles to the Box in the second column from the left.
  3. Find an accessible Light Green marble on the right side of the Top Tray and drop it onto that same Box, clearing it and revealing a Dark Blue Box.
  4. Continue clearing Dark Blue Boxes as they become accessible, using the Dark Blue marbles freed from the Top Tray.
  5. As you clear more Boxes, you will eventually expose White Boxes deep in the columns. Only now, when you have at least two open slots on the Conveyor Belt and a White Box is visible, pop one of the top Iced Boxes.
  6. Send the two White marbles down to the White Box. Do not open the other White Iced Box until you have another White Box ready.

Phase three: Accessing the bubble marbles

  1. With most of the Top Tray emptied, the bubbly Dark Blue, Pink, and Green marbles at the bottom become reachable.
  2. Match each bubbly marble to a Box of the same color as soon as one is exposed. For example, when a Dark Blue Box appears, release the bubbly Dark Blue marble.
  3. Continue releasing the bubbly marbles one by one as their corresponding Boxes are revealed.
  4. Finish by clearing any remaining colors, such as Red, Purple, and the last of the Whites, always ensuring a matching Box is ready before sending a marble down.

Tips & tricks

  • Keep the Conveyor Belt as empty as possible; never release a marble unless you have a destination Box in mind.
  • Use the central Iced Box early to gain Light Green marbles, but postpone the White Iced Boxes until you have exposed White Boxes.
  • When a bubbly marble is revealed, prioritize matching it quickly to prevent it from blocking other marbles.

Common mistakes

  • Popping the White Iced Boxes too early, which floods the Conveyor Belt with unusable White marbles.
  • Focusing on Dark Green or Dark Blue before clearing the Light Green Boxes, which can trap you.
  • Ignoring the bubbly marbles at the bottom until the end, causing them to block access to other marbles.

Marble Sort Level 803 FAQ

Why does my Conveyor Belt flood on Marble Sort Level 803?

It floods when you open the White Iced Boxes before any White Box is exposed, releasing two White marbles that have nowhere to go.

Which color do I clear first on Marble Sort Level 803?

Clear Light Green first, as there are two Light Green Boxes on top of the bottom columns, and Light Green marbles are readily available.

How many moves does it take to clear Marble Sort Level 803?

The level typically takes around 150 to 200 moves, depending on how efficiently you manage the Conveyor Belt and avoid mistakes.

Do I need boosters to beat Marble Sort Level 803?

No boosters are required if you follow the correct sequence, but a shuffle or undo can help if you make a misstep.

What happens if I pop a White Iced Box too early on Marble Sort Level 803?

Popping a White Iced Box early will release two White marbles that have no matching Box, clogging your Conveyor Belt and likely causing a loss.

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