Marble Sort Level 721 — Walkthrough and Solution

Marble Sort Level 721 is a puzzle that looks chaotic but follows a strict order. The board has a central 2x2 Red block frame, two Rocket Boosters on the far left, and a perimeter of Yellow, Light Blue, Green, Pink, and Purple blocks. The solution is to clear the initial Purple and Rocket blocks first, then the Red frame, and finally the outer colors in a precise sequence.

The board layout shows two Rocket Boosters stacked on the far left, sitting above a Pink block. The center is a 2x2 Red frame with a blue-striped border. Surrounding it are Yellow and Light Blue near the bottom, Green and Pink at the top, and Purple on the middle sides. The bottom has four columns of Boxes with five rows each, initially demanding Purple, Purple, Red, and Pink from left to right.

Marble Sort Level 721 Walkthrough

The bottom Boxes start with active demands: the leftmost wants Purple, the second also Purple, the third Red, and the rightmost Pink. The second row will later demand Red, Purple, Red, and Yellow. The initial trap is that Yellow and Green blocks on the outer edges look free to tap, but they are not needed yet. Tapping them early will fill the Conveyor Belt and block access to the required colors.

The key is to ignore the perimeter colors until the active Boxes are satisfied. The central Red frame is locked but becomes essential after the first row is cleared. The Rocket Boosters must be launched to expose the Pink block underneath.

How to Beat Marble Sort Level 721 — Step-by-Step

Phase one: Launch the Rockets and clear the first row

1. First, tap the two Purple blocks on the left and right flanks of the central frame. This feeds the two active Purple Boxes.
2. Next, tap the two Rocket Boosters on the far left. They will launch off the board, revealing a Pink block underneath.
3. Tap that exposed Pink block to send it down to the Conveyor Belt.
4. Then, tap the top-right corner of the central Red frame. This provides a Red block to fill the active Red Box.
5. You have now cleared the first row of Boxes, and the Conveyor Belt is safe.

Phase two: Break the central Red frame

1. Now the second row is active, demanding Red, Purple, Red, and Yellow from left to right.
2. Tap two of the remaining Red blocks in the central frame. This clears both Red Boxes in the second row.
3. Next, tap the Yellow block near the bottom right of the top tray. This fills the Yellow Box in the second row.
4. Finally, tap the remaining Purple block on the right side of the top tray. This clears the last Box in the second row.
5. With the second row cleared, the central frame is nearly empty, and the board is more open.

Phase three: Clear the perimeter and finalize

1. Now the third row is active, requiring Yellow, Pink, Yellow, and Pink. Tap the Pink block at the top edge of the board.
2. Then, tap the remaining Yellow blocks from the perimeter to fill the two Yellow Boxes.
3. Next, the fourth row becomes active, needing Pink, Light Blue, Green, and Light Blue. Tap the remaining Pink blocks from the top tray.
4. After that, tap the Light Blue blocks that have been waiting on the outer edges. Feed them into the Light Blue Boxes.
5. Finally, tap the Green blocks at the very top to clear the last rows. Make sure to feed the colors in the exact order the Boxes demand to avoid clogging the Conveyor Belt.

Tips & tricks

• Always check the active row of Boxes before tapping any block. Only feed the colors that are currently demanded.
• When multiple blocks of the same color are available, tap the one that is closest to the Conveyor Belt to minimize movement.
• Use the central Red frame as a buffer: tap Red blocks when you need them, but avoid clearing it entirely until the second row is active.

Common mistakes

• Tapping Yellow or Green blocks early, which fills the Conveyor Belt and blocks access to needed colors.
• Launching the Rocket Boosters before feeding the Purple blocks, which delays the exposure of the Pink block.
• Clearing the Red frame too early, leaving no Red for the second row, forcing a restart.

Marble Sort Level 721 FAQ

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