Marble Sort Level 66 Walkthrough & Solution

Level 66 Board Overview: Half the Bottom Row Is Blind

Level 66 is a bait museum. The bottom receiver area splits into two personalities: the left two columns are fully visible, while columns 3 and 4 hide Mystery Boxes between their demands. You can plan the left side. The right side you have to earn.

Column 1 stacks Green, Brown, Light Blue, and Orange. Column 2 wants Light Blue, Pink, Orange, and Light Pink. Columns 3 and 4 both open with Dark Red, then bury Mystery Boxes between Green, Pink, and Orange demands. Until those gray boxes flip, you are guessing.

Up top, the Top Tray has a jagged shape that dips low in the middle. The lowest row holding everything back is two Green clusters and two Brown clusters. Above them sits a jumble of Dark Red, White, Dark Grey, Pink, and Orange. And the real nastiness: several blocks are Connected Boxes — Light Blue tied to Purple, Pink tied to Light Blue, Orange tied to Light Pink. Tap one and both drop, whether the second color has a home or not.

The Trap in Marble Sort Level 66

The Connected Boxes are the whole puzzle:

• Light Blue + Purple pair: the biggest bait on the board. Light Blue has a Box waiting in column 2, but Purple has nothing early. Tap the pair too soon and Purple squats on your belt for ages.
• Pink + Light Blue pair and Orange + Light Pink pair: same logic. Every tied drop is a two-for-one deal you did not ask for.
• The jagged front row: Green and Brown clusters at the bottom edge look like free clears, and they are — but only after you confirm their Boxes are actually up.
• The right-side Mystery Boxes: they dictate the entire midgame. Clearing the two Dark Reds fast is your only way to flip them and stop playing blind.

The level ends with a flood: dig deep enough on the right and a long string of Orange and Dark Grey comes out all at once. If your belt is already full when that happens, the run is over.

Marble Sort Level 66 Step-by-Step Walkthrough

Strip the hidden obstacles first, then survive the space crunch.

Opening: break the front line

1. Tap the Green clusters at the bottom edge of the Top Tray. They feed straight into the Green Box at the top of column 1.
2. Pull every Dark Red you can reach from the left and upper-right of the tray. Both columns 3 and 4 open with Dark Red Boxes — clearing them flips the first layer of Mystery Boxes. This is your top priority.
3. Drop the Brown clusters from the bottom edge into the Brown Box now showing in column 1.
4. Do not touch the Light Blue-Purple Connected Boxes. Not yet. Purple has nowhere to go.

Mid-game: the flood arrives

5. Read the newly revealed Mystery Boxes in columns 3 and 4, and drop whatever colors they demand first. Keep those right columns moving or the whole board stalls.
6. Now trigger the Light Blue-Purple pair. Light Blue sorts into the column 2 Box; Purple parks on the belt. That is fine — a Purple Box is coming soon.
7. Approach the Orange flood carefully. As you dig into the right side, a huge run of Orange and Dark Grey marbles opens up. Do not drop Orange until the Orange Boxes in columns 1 and 2 are fully exposed and ready.

Cleanup: untangle the leftovers

8. Flush the parked Purple into the Purple Boxes that cycle up in the middle columns. Your belt probably holds a long snake of Purple and Orange by now — work it down color by color.
9. Drop the remaining Pink and Light Pink Connected Boxes from the upper right. Their Boxes in columns 2 and 4 should be active.
10. Face the last layer of Mystery Boxes with at least three belt slots free — hold back Dark Grey if you need the room — then feed in whatever the final boxes ask for. Tap slowly at the end; one clumsy double-tap on a tied pair ends the run at the finish line.

Level 66 Tips Recap

• Every Connected pair is a package deal — before tapping, check that the second color has a Box or that your belt can afford it.
• Dark Red first, always. Flipping the right-side Mystery Boxes early turns a guessing game into a planning game.
• Keep three belt slots in reserve for the final Mystery Box reveals.