Marble Sort Level 27 Walkthrough Solution | Marble Sort 27

Marble Sort Level 27 Guide: The Left-Wall Tunnel Trap

Marble Sort Level 27 hits a massive difficulty spike by introducing a deceptive trigger mechanism. The board is flooded with Light Pink, Mint Green, Dark Red, and Orange marbles. The Top Tray is highly asymmetrical. The right side features a stepped, jagged layout that forces you to dig down column by column. The left side is a flat vertical drop featuring two Tunnels embedded directly into the wall.

Your bottom area features four deep columns of Boxes. The starting line asks for Light Pink, Mint Green, and Orange. Your brain will immediately spot the matching colors in the bottom row of the Top Tray and want to tap them all. Do not do this. This specific board is designed to punish fast tapping. If you do not control the left-side Tunnels, your Conveyor Belt will jam before you even reach the midgame.

The Left-Wall Trap pattern in Marble Sort Level 27

To beat this level, you have to read the board exactly as it is laid out. The bottom row of the Top Tray offers four available marble blocks: Dark Red, Orange, Purple, and Light Pink.

Your starting active bottom Boxes are two Light Pinks, one Mint Green, and one Orange.

The biggest threat on this board is the lower Tunnel holding Light Pink marbles on the left wall. It is currently blocked by a Light Pink marble block. Beneath that block sits a Dark Red marble block.

This Dark Red block in the bottom-left corner is 100% bait.

If you take the bait and tap the Dark Red block, here is exactly how you lose. The Dark Red marbles go to the Conveyor Belt. You then tap the newly freed Light Pink block to clear one of your starting bottom Boxes. The moment that space empties, the lower Tunnel activates. It instantly shoots three more Light Pink marbles onto your Conveyor Belt.

You now have a massive problem. Your remaining active bottom Boxes are Mint Green, Dark Grey, and Orange. There is no active Light Pink box to absorb the marbles from the Tunnel. Those Light Pink marbles will just sit on the Conveyor Belt, eating up your limited space. Because the Mint Green marbles you actually need are buried in the third row of the Top Tray under a layer of Purple and Dark Grey, you have to move junk colors to the belt to reach them. With the Tunnel marbles hogging your slots, the Conveyor Belt overflows and you fail the level.

The core identity of Marble Sort 27 is order of operations. You must dig down the stepped right side of the Top Tray first. You must cycle the bottom Boxes until a fresh Light Pink box appears in the front row. Only then is it safe to touch the left side of the board.

Marble Sort Level 27 Step-by-Step Walkthrough

Follow this specific release order to safely expose the buried colors without triggering the left wall too early.

First Taps and Ignoring the Bait in Marble Sort Level 27

The start of the board is entirely about working the right side and ignoring the left. Keep your Conveyor Belt as empty as possible.

1. Start on the bottom row of the Top Tray. Tap the Orange marble block. This immediately drops down and clears the Orange bottom Box in the fourth column.
2. Tap the Light Pink marble block on the bottom right. This will fly down and clear one of the Light Pink bottom Boxes in the first two columns.
3. Stop right there. Leave the bottom-left Dark Red marble block completely alone.
4. Your active bottom Boxes now need Mint Green. Look at the right side of the Top Tray. You need to clear the second row to reach the Mint Greens in the third row.

Managing the Midgame Dig in Marble Sort Level 27

Now that the easy starting matches are done, you have to carefully juggle the middle layers without running out of belt space.

1. Tap the Purple marble block in the bottom row. Send it to the Conveyor Belt.
2. Tap the two Dark Grey marble blocks on the right side of the second row. Send them to the Conveyor Belt. Because you did not trigger the Tunnel earlier, you have plenty of room to hold these.
3. The Mint Green marble blocks in the third row are now fully exposed.
4. Tap the Mint Green blocks. They will immediately slot into the active Mint Green bottom Boxes and clear them.
5. Watch the lower Boxes shift upward. As the Mint Green and Orange boxes clear out, a new Light Pink bottom Box will finally rise to the front row from the back of the stack.

Triggering the Tunnels for the Finish in Marble Sort Level 27

The board state has now shifted in your favor. You have a Light Pink bottom Box ready and waiting, which means you can finally disarm the trap on the left wall.

1. Tap the Dark Red marble block in the bottom-left corner of the Top Tray. It will move to the Conveyor Belt and likely match with other Dark Red marbles you uncover soon.
2. Tap the Light Pink marble block sitting right above where the Dark Red one was. This will fly down and clear your waiting Light Pink bottom Box.
3. The space in front of the lower Tunnel is now empty. The Tunnel will trigger and shoot its three Light Pink marbles out.
4. Because the bottom Boxes are constantly cycling, these newly dispensed Light Pink marbles will either immediately fill a fresh box or sit safely on the Conveyor Belt for just a few seconds while you clear the next color.
5. Repeat this exact logic for the top Tunnel. Clear out the middle section of the Top Tray, watch the bottom Boxes to ensure you have a matching color ready, and then pull the final blocking marbles away to let the upper Tunnel dispense. Keep your belt clear and the rest of the sorting will flow naturally to the end screen.