Marble Sort Level 90 Walkthrough & Solution

Level 90 Board Overview: Five Tunnels, Four Columns, Zero Mercy

Level 90 starves you. The front of the Top Tray is stacked with fat blocks of yellow, teal, bright green, and purple that scream “tap me,” but the back half of the board is locked behind a row of five Tunnels, each stamped with a countdown of 3. Nothing back there exists until you earn three bottom Box clears.

Up front, the Top Tray’s leading edge is four huge 9-marble squares: yellow, teal, bright green, purple, left to right. Tucked just behind them are a handful of singles — two reds on the left, one white in the middle, one red on the right.

The bottom is where it gets mean. You only have four narrow columns, and they stack like this:

• Column one: Red Box on top of a gray Mystery Box.
• Column two: Yellow Box over Pink over Light Green.
• Column three: Red Box over White.
• Column four: Teal Box over Purple.

The trap is red. Two Red Boxes are open at once, but only three red marbles are reachable before the Tunnels open. Try to satisfy both Red Boxes and you strand reds on the belt with no finish line.

The Trap in Marble Sort Level 90

This board is a squeeze play: generous marbles up top, almost no legal destinations below.

• The Tunnel wall: five Tunnels all counting down from 3 means the midgame arrives as a single violent wave, not a trickle. Dark blue, orange, and dark green marbles pour out together.
• The double Red bait: two open Red Boxes whisper “clear us both.” You cannot. Three accessible reds, six slots needed. Pick one Box and finish it; the other stays as a decoy.
• The buried layers: Pink hides under Yellow, White under Red, Purple under Teal. The colors you need next are always one clear deeper than the color in front of you.
• The Mystery Boxes: several gray boxes sit fully exposed after the early clears. Feed them the wrong guess and the belt clogs at the exact moment the Tunnel wave lands.

Marble Sort Level 90 Step-by-Step Walkthrough

Treat belt space like oxygen. Never pull a marble without a guaranteed home.

Opening: three safe clears to pop the Tunnels

1. Tap the giant yellow block at the front left into the Yellow Box in column two. Guaranteed clear. The Tunnel counters drop to 2, and a Pink Box appears beneath it.
2. Grab all three exposed red marbles — the pair on the left and the single on the right — and send them into ONE Red Box (column one or three, your choice). Second clear. Tunnels drop to 1.
3. Leave whatever you just exposed (a Mystery Box or the White Box) alone for the moment.
4. Dig out the pink marbles sitting behind the old yellow position and clear the Pink Box in column two. Third clear — the Tunnels hit zero and blow open.

Midgame: catch the Tunnel wave

5. The Tunnels immediately dump dark blue, orange, and dark green marbles toward the front. Your first job is finding homes, fast.
6. Clear the Teal Box in column four with the giant teal block from the Top Tray. This exposes the Purple Box under it.
7. Drop the giant purple block from the front right into that Purple Box.
8. More Tunnels fire as you clear, dumping extra dark blue and orange. Keep routing them into matching Boxes the moment those Boxes cycle in.
9. Now deal with the exposed Mystery Boxes. Clear whatever sits on top of each one, watch the reveal, and if it shows orange or dark blue, feed it straight from the Tunnel overflow before the belt backs up.

Cleanup: strict belt discipline to the end

10. Cap your Conveyor Belt at three parked marbles. Four or five randoms while waiting on a reveal is how runs die here.
11. Drain the last green and white marbles from the deep center of the tray into column three.
12. The final Tunnel triggers as the last column bottoms out. Leave exactly enough belt room to catch its final dump, match the stragglers, and the board is yours.

Level 90 Tips Recap

• One Red Box gets fed, the other gets ignored — there are only three reds to go around before the Tunnels open.
• Yellow, then Red, then Pink: that fixed three-clear opening is what pops the ‘3’ Tunnels on schedule.
• When the Tunnel wave lands, park nothing. Every marble off the belt is a marble that cannot jam you.