Marble Sort Level 424 Walkthrough & Solution

Level 424 Board Overview: The Late-Game Rainbow Stack

Level 424 is a late-game grid board, and it opens with a simple-looking promise: the receiver columns at the front ask for only two colors — Pink and Orange, two Boxes each. Everything else on the board is noise until those first four fill. The grid itself is a tall wall of seven columns stacked several layers deep, built mostly from Green, Blue, Cyan, Yellow, Red, White, and Purple, with Pink and Orange buried at odd heights inside them.

The wildcard of the level is the rainbow medallion pieces. Several sit embedded in the middle of the columns, ringed by two or three colors you are not ready to commit to. They can slot into whichever Box you send them to, which makes them the most valuable tiles on the board — and the easiest ones to waste in the first ten seconds.

Above the grid, the feed line is already loaded. A Yellow batch rides near the front with a long Red run behind it, and more mixed batches follow in groups of three. Nothing on that line matches the opening Boxes, so the level is telling you to sort what is already on the board before you let the belt dump anything new in your way.

The Trap in Marble Sort Level 424

The board is rigged to make you spend your wildcards early and jam the feed line. Here is the layout:

• The opening Boxes want Pink and Orange, but the board is mostly Green, Blue, and Yellow: Pink sits scattered through the upper layers of the middle and right columns, while Orange is nearly invisible at the start. Chasing Orange across the grid wastes moves while the Pink Boxes sit half-empty.
• Rainbow medallions sit under heavy mixed stacks: the columns that carry them are two or three colors deep, so revealing one usually means dragging a color past an open Box it does not belong to.
• The feed line runs in batches of three: Red, Yellow, and later Light Blue ride in groups. A batch only clears cleanly when its Box is open — dump it early and the queue backs up behind it.
• No single color appears in runs: every visible column mixes shades, so there is no free combo on the opening board. You earn every drop.

Marble Sort Level 424 Step-by-Step Walkthrough

Sort the open colors, save the wildcards, and let the feed line do the rest. Follow the release order.

Opening: clear the Pink and Orange Boxes

1. Tap the Pink tiles in the upper layers of the middle columns straight into the two open Pink Boxes — they are the only drops that cost you nothing.
2. Do not chase the Orange Boxes across the grid. Orange arrives from the feed line, so wait for the first Orange tiles to come off the belt and send them straight down.
3. Leave the Yellow batch alone while it rides at the front of the line — no Yellow Box is open yet, and letting it drop into the grid just buries your Pinks.
4. Keep the queue moving by only releasing colors whose Box is front and center. A full batch of three matching tiles finishes a Box in one pass and clears the belt fast.
5. Do not spend a single rainbow medallion during the opening. With two Box colors live, a wildcard is a waste; it buys you far more in the midgame.

Midgame: spend the rainbows, strip the middles

Once the Pink and Orange Boxes clear, the receiver columns rotate toward Yellow, Red, Green, and Purple — and suddenly every color you have been ignoring has a home. The rainbow medallions now earn their keep.

6. Feed the queued Yellow batch the moment a Yellow Box opens, then pick off the Yellow tiles stacked in the left and right columns.
7. Work the tall mixed columns top-down. Each stack hides two or three colors, so peel one layer at a time and drop each tile the moment its Box is live.
8. Use a rainbow medallion to finish a Box that is one tile short — this clears the receiver, rotates the row, and gives you a new color to sort into.
9. Watch for columns where two tiles of the same color sit stacked: clearing them empties the column and opens up the middle of the board.
10. Keep the feed line in groups of three. When a Red run comes off the belt, let the whole batch fall into the open Red Boxes rather than feeding single tiles from the grid first.
11. If a Green or Purple tile sits at the bottom of a column with unusable colors above it, leave it. The Boxes cycle; the column is not going anywhere.

Cleanup: finish the stragglers

With most of the grid stripped away, the board becomes a straight finishing line. The closing frame catches the level still mid-clear: the lower rows of the grid are already empty, only a few scattered stacks remain above them, and the feed line has thinned to a short tail of Light Blue, Yellow, and Red waiting for their final Boxes.

12. Play only to the active front row from here — tap the remaining single tiles as their matching Box slides forward.
13. Feed the closing Light Blue, Yellow, and Red tail in order, a batch at a time, and finish each nearly-full receiver before moving to the next.
14. Save any last rainbow for the final Box. If one tile is stranded at the bottom of the last column, the wildcard closes the level.

Level 424 Tips Recap

• The opening is a Pink and Orange job — ignore Yellow, Red, and the feed line until their Boxes cycle open.
• Rainbow medallions are finish-the-Box tools, not opening moves. Spend them when a receiver is one tile short.
• The feed line runs in batches of three: release a whole batch only when its color is front and center.
• In the endgame, most of the board is empty — just match the tail colors and let the last Boxes pull the stragglers down.