Marble Sort Level 737 Walkthrough Solution | Marble Sort 737

Marble Sort Level 737 Guide: The Tunnel Ring and Arrow Box Trap

Marble Sort Level 737 is a nightmare of space management. You are facing a completely barricaded board. The outer edges are entirely locked down by massive rainbow-striped Tunnels. Inside that perimeter, four Arrow Boxes shaped like rockets point directly into the center grid, holding the entire outer layer hostage.

You need to clear the center, but your Conveyor Belt space is desperately low. The dominant colors in the middle are White, Blue, Red, Green, and Orange. Your starting bottom Boxes from left to right are White, Blue, Orange, and Light Green. Releasing the wrong center color here instantly jams your belt. You cannot afford to make a single blind guess.

The Arrow Box Lockout in Marble Sort Level 737

Look exactly at how this Top Tray is arranged. It is a fortress.

The most critical feature is the massive ring of Tunnels. There is a long vertical rainbow Tunnel on the far left, another on the far right, and horizontal ones capping the top and bottom. You cannot access the marbles inside them until the front blocks drop. Guarding those drops are the four Arrow Boxes. You cannot activate these until the specific block they point to is cleared.

The center of the board is your only starting zone. It contains a tight cluster of standard blocks: a Red square sits directly between Green and Blue blocks. There are also grey Mystery Boxes tucked into the corners of this inner square, hiding their true colors.

Your bottom Boxes dictate everything. The front row demands White, Blue, Orange, and Light Green. But look closely at what sits underneath them. The second row holds Brown, Red, White, and Pink. The third row brings Red and more Pink.

Red is your biggest trap. The Red square in the center of the Top Tray looks incredibly tempting to tap. Do not touch it. There is no Red Box in the front row. Dropping Red onto the Conveyor Belt early will permanently eat slots you desperately need for White and Blue. You have to work from the front to the back. If you ignore the bottom Box order, the Tunnels will flood the belt later and kill your run.

Marble Sort Level 737 Step-by-Step Walkthrough

You must dismantle the center before you even think about the outer ring. Control the belt. Leave the bait alone.

Piercing the Center Fortress in Marble Sort Level 737

Your opening moves require extreme discipline. You must only feed the exact front-line bottom Boxes.

1. Extract the White block from the center of the Top Tray. This perfectly matches the far-left bottom Box.
2. Grab the Blue block sitting right next to it. Send it down to clear the second bottom Box.
3. Tap the Orange block to feed the third bottom Box.
4. Leave the center Red square alone. It is bait. Let it sit there while the front bottom Boxes clear out and the second row (Brown, Red, White, Pink) slides forward.
5. Hit the grey Mystery Boxes in the inner cluster only when you have at least three open slots on the Conveyor Belt. If a Mystery Box reveals a color you do not currently have a bottom Box for, let it sit on the belt and pivot back to matching the new Red and Pink boxes that just appeared.

Surviving the Tunnel Release in Marble Sort Level 737

Clearing the center triggers a massive chain reaction. The Arrow Boxes will activate, unlocking the outer perimeter.

6. Once the center is hollowed out, the four Arrow Boxes will drop. This immediately opens the gates to the massive rainbow Tunnels on the left, right, top, and bottom.
7. Brace for impact. The Tunnels will start dumping a massive line of Blue, Cyan, and Pink marbles onto your Conveyor Belt.
8. Immediately shift your focus to the newly revealed bottom Boxes. The lower tray will heavily rotate to Orange, Green, Mint/Cyan, and Yellow.
9. Prioritize clearing the Mint/Cyan and Orange Boxes. The Conveyor Belt gets incredibly crowded here. You need to rapidly flush the blue and cyan marbles off the line to prevent a fatal jam.
10. Work down the left side first. Tap the remaining Green and Purple blocks to feed the left-side bottom Boxes, keeping the right-side Yellow and Red blocks in reserve.

The Surprise Bag Endgame in Marble Sort Level 737

By the time the Tunnels are nearly empty, the board narrows down to a few remaining blocks and one massive wildcard.

11. A grey fabric Surprise Bag tied with rope will finally be accessible in the upper center of the Top Tray.
12. Do not pop the Surprise Bag immediately. Look at your Conveyor Belt. If you have more than three loose marbles blocking the line, clear the bottom Yellow and Pink Boxes first to create space.
13. Once the belt is safe, crack open the Surprise Bag. It will spill its hidden marbles.
14. Match the final Surprise Bag contents with the remaining Green and Orange bottom Boxes to clear the board and secure the win. Keep your taps methodical at the very end to avoid tripping over the final drop.