Marble Sort Level 108 Walkthrough & Solution

Level 108 Board Overview: The Inward Arrow Squeeze

Level 108 is claustrophobic by design. The Top Tray is a tight 5x5 grid where nearly every block on the outer edge is an Arrow Box pointing at the center. Arrow Boxes can’t drop straight down — they have to slide sideways into an open lane first. If the middle is clogged, the entire perimeter is bricked.

The colors on display are cheerful — Orange, Light Pink, Green, Light Blue — but they’re decoration. Your starting Boxes want Red, Orange, Light Pink, and another Orange, and almost every Orange marble on the board is locked behind an arrow in the upper rows.

Two Tunnels sit in the top-left and top-right corners, each showing a 3. They’re dormant now, but they’re holding late-game marble dumps you’ll need to schedule carefully.

The Trap in Marble Sort Level 108

Everything hinges on the bottom row of the tray and the spine above it:

• Bottom row: a Light Pink right-facing Arrow Box, a solid Light Blue, a solid Red dead center, a solid Green, and a Light Pink left-facing Arrow Box. Those corner Light Pinks are the only ones that can feed your mid-right Box — and they’re pinned in place by the Light Blue and Green beside the center.
• Center column: bottom to top it runs Red, Yellow, Purple, Green, Light Blue. This vertical line is the whole puzzle. Carve it out and you create an empty shaft; Arrow Boxes on the flanks slide into the gap and finally drop.
• Orange, the bait king: Orange blocks scatter across rows two through four on both sides, nearly all wearing arrows. You cannot reach them early. Digging for them through the sides just fills your belt with unplayable colors while two Orange Boxes tap their feet impatiently.
• The corner Tunnels: each one spits three sets of marbles when the block beneath it clears. Trigger one with a crowded belt and the run is over.

The level’s demand is simple to state and hard to execute: empty the middle before you touch anything else.

Marble Sort Level 108 Step-by-Step Walkthrough

Accept early belt pain. It’s the price of board control.

Opening: carve the center shaft

1. Tap the solid Red block in the bottom-center of the tray. It drops into the far-left Red Box. Easiest clear of the level.
2. Tap the solid Light Blue block beside the center. It parks on the Conveyor Belt — no Box wants it yet. Scary, but necessary.
3. Tap the solid Green block on the other side. It joins Light Blue on the belt.
4. With both corners unpinned, tap the bottom-left Light Pink Arrow Box. It slides into the center gap and drops.
5. Tap the bottom-right Light Pink Arrow Box. It slides in behind the first, and together they fill the mid-right Light Pink Box. Choke point cleared.

Mid-game: feeding the Orange pair

The center shaft is open but shallow. Time to dig one layer deeper.

6. Tap the Yellow block now sitting at the bottom of the center column onto the belt. You’re banking it — a Yellow Box comes later.
7. Tap the Orange right-facing Arrow Box in the lower-left quadrant. It slides into the deepened shaft and drops into a waiting Orange Box.
8. Work the right side of the grid: drop the exposed Orange blocks — solid and arrow alike — into the second Orange Box.
9. Both Orange Boxes clear, and the board flips. Fresh Boxes slide in asking for Light Blue, Dark Pink, and Green — and the Light Blue and Green you parked in steps 2 and 3 fly off the belt on their own.

Endgame: scheduling the corner Tunnels

The late game is about the top corners. As Purple and Dark Blue blocks clear from the upper side rows, the Tunnels arm themselves.

10. Before clearing any block that sits directly under a Tunnel, count your belt slots. Fewer than four free? Clear front Boxes first.
11. Pop the block under the top-left Tunnel. It dumps three sets of marbles — usually Yellow, Dark Blue, and Pink. Let them land, then match what your front Boxes want. That banked Yellow from step 6 often finds its home here.
12. Trigger the top-right Tunnel only if you actually need its colors. Meanwhile, drop the down-pointing Arrow Boxes along the top row in whatever order your front Boxes dictate.

Level 108 Tips Recap

• Center first, always. The sides are decoration until the shaft is open.
• Parking Light Blue, Green, and Yellow on the belt early is the intended line — their Boxes arrive right after the Orange pair clears.
• Four free belt slots is the entry fee for touching a Tunnel. Pay it every time.