Marble Sort Level 397 Walkthrough Solution | Marble Sort 397

Marble Sort Level 397 Guide: The Iced Box and Mystery Box Trap

Marble Sort Level 397 is an absolute grinder. This board looks innocent until you peel back the first layer and realize how tightly locked the middle is.

You are dealing with a heavy mix of Pink, Red, Dark Blue, and Light Blue marbles right out of the gate. But the colors are not the real problem. The real problem is the massive diamond shape of Iced Boxes in the dead center of the Top Tray, totally surrounded by a wall of Hidden Boxes. You also have four blue Tunnels sitting on the outer edges, just waiting to dump extra boxes onto your Conveyor Belt when you least expect it. Down below, the bottom Boxes are stacked deep with Mystery Boxes that will scramble your entire strategy mid-game.

Let's break down exactly how to rip this board open.

The Diamond Trap in Marble Sort Level 397

Look at your screen right now. The Top Tray setup in Marble Sort Level 397 is deliberately built to force early mistakes.

The very bottom row of the top board consists of four textured boxes sitting right above the drop chute: Light Blue, Dark Blue, White, and Pink. Just above them sits a solid Purple, a Pink, a Hidden Box, and a Yellow.

Above that? Complete chaos. You have an enormous block of grey Hidden Boxes protecting four central Iced Boxes. There is a Red Iced Box on the left, a Green one up top, a Blue one at the bottom, and a Yellow one on the right. Remember, an Iced Box will only shatter and activate if two neighboring boxes are dropped first.

Now look at the edges. You have four Tunnels marked with a "2". One is hugging the bottom left corner, one on the far left wall, one on the top right, and one on the middle right edge. These Tunnels are dangerous. When the front box drops, they spit out two more boxes.

Your bottom Boxes dictate the entire early game. You have four columns.

• The far-left column starts with an active Pink, followed by Red, Orange, a Mystery Box, and Light Blue.
• The center-left column starts with an active Red, then a Mystery Box, Purple, Purple, and another Mystery Box.
• The center-right column is Dark Blue, Red, and two Mystery Boxes.
• The far-right column is Light Blue, White, Light Blue, and Red.

The bait here is obvious. That textured Light Blue box on the bottom left of the Top Tray looks like a free move because your far-right bottom Box needs Light Blue. Do not touch it yet. It is a trap. You only have one visible Light Blue in the tray. Dropping it now will permanently burn a slot on your Conveyor Belt while you desperately dig through Hidden Boxes looking for two more matches.

Marble Sort Level 397 Step-by-Step Walkthrough

You need a surgical approach to survive this layout. One wrong drop into the Conveyor Belt will jam your run before you even crack the center ice.

Unlocking the Front Line in Marble Sort Level 397

The first phase is all about taking the guaranteed clears without clogging your belt.

1. Look at your active bottom Boxes: Pink, Red, Dark Blue, and Light Blue.
2. Drop the textured Pink box from the bottom right of the Top Tray.
3. Drop the textured Dark Blue box from the center-left of the bottom row. Both of these will flow directly into their matching active bottom Boxes.
4. This clears out the front line and instantly reveals the solid Purple, solid Pink, and Yellow boxes right behind them. More importantly, it turns several adjacent Hidden Boxes into playable colors.
5. Leave the textured Light Blue and White boxes alone. Your Conveyor Belt must remain totally empty for the next phase.

Cracking the Iced Boxes in Marble Sort Level 397

Now the board gets tricky. You need Red marbles to clear that second active bottom Box, but the visible Reds are locked.

6. Look at the newly revealed colors from the Hidden Boxes you just uncovered. Your primary goal is to find two matches that sit directly next to the Blue Iced Box at the bottom of the center diamond.
7. Drop the adjacent boxes to shatter the ice. This frees up the center of the board and allows you to tunnel upward toward the Red Iced Box on the left side.
8. Prioritize clearing any exposed Red marbles. You have three different bottom Box stacks that need Red early in the game.
9. Watch the outer Tunnels. If you clear a box directly below the bottom-left Tunnel, it will activate. Ensure you have at least three open slots on your Conveyor Belt before triggering a Tunnel, as you do not know what two colors it will push out.

Surviving the Mystery Boxes in Marble Sort Level 397

Once you clear that initial wave of Pink and Dark Blue, the lower board shifts drastically.

10. The center-left stack drops its Red, exposing a Mystery Box. The center-right stack drops its Dark Blue, exposing a Red.
11. You must clear the center-right Red next. Do not trigger the center-left Mystery Box yet. If that mystery color reveals itself as Green or Yellow—colors currently trapped in the upper Iced Boxes—you will be paralyzed.
12. Work your way up the right side of the Top Tray to break the Yellow Iced Box. This gives you access to the top right Tunnel.
13. Once the right side is open, start clearing the textured Light Blue and White boxes you left behind at the start. Your far-right bottom stack needs them now.
14. Finally, trigger the Mystery Boxes in the lower stacks one at a time. Never reveal two Mystery Boxes at once. Clear the required color for the first one, empty your Conveyor Belt, and only then let the second one drop into place. Follow this loop to clear the rest of the board.