Marble Sort Level 30 Walkthrough & Solution

Level 30 Board Overview: A Wall of Question Marks

Level 30 is a vision problem, not a color problem. Yes, the board is full of Light Green, Pink, Yellow, and Purple — but what actually beats you is that the entire center of the Top Tray is a solid grid of 15 Mystery Boxes, and four countdown tubes marked with a 3 sit on the top and side edges waiting to dump more pieces on you.

Your starting receiver Boxes are almost insultingly narrow: two Light Green, one Pink, and one Light Pink. Meanwhile the front row of the Top Tray waves six tempting blocks at you — Dark Green, Light Green, Pink, Yellow, Dark Red, and White. Four of those six are bait. Tap them and they clog the Conveyor Belt while the colors you actually need stay trapped.

The Trap in Marble Sort Level 30

The board is layered to punish greedy tapping:

• Front row: six solid blocks, but only Light Green and Pink match your open Boxes. Dark Green, Yellow, Dark Red, and White have no destination yet.
• Second row: four 9-dot Boxes — Light Green, Light Blue, Light Green, and Purple. These are your real ammunition once the bottom Boxes rotate.
• The center: a 15-block Mystery Box wall hiding the whole midgame. Every reveal is a gamble you need belt space to absorb.
• The edges: four countdown tubes at 3. Each Box clear ticks them down, and at zero they fire fresh 9-dot Boxes onto the board — right when your belt is most crowded.

Winning means clearing in an order that keeps at least a few belt slots open at all times.

Marble Sort Level 30 Step-by-Step Walkthrough

The opening is rigid. Get it right and the rest is manageable.

Opening: two taps and nothing more

1. Tap the solid Light Green block in the front row. It feeds one of your Light Green Boxes directly.
2. Tap the solid Pink block in the front row. It fills the Pink Box in the second column.
3. Hands off the Dark Green, Yellow, Dark Red, and White blocks. Tapping any of them now is how the run ends.
4. Hit the 9-dot Light Green Box in the second row. It clears the second Light Green receiver and opens up your lower board.

Mid-game: the rotation rewards patience

Clearing those Boxes rotates the bottom columns, and suddenly Yellow, White, and Purple are wanted.

5. Now tap the front-row Yellow and White blocks — their Boxes are finally active.
6. Start tapping the lowest row of the Mystery Box wall. Keep at least three belt slots free, because a bad reveal (say, Dark Red with no Dark Red Box) needs somewhere to sit.
7. Pull down the Purple 9-dot Box on the right side. It feeds the new Purple receiver and ticks the edge tubes closer to zero.

Late game: the tubes fire back

8. The countdown tubes hit zero and drop fresh 9-dot Boxes — expect Light Blue and Yellow appearing on the left and right flanks.
9. Do not panic. If a matching receiver Box is active, flush the new arrival straight into it and keep the board clean.
10. Dismantle the rest of the Mystery Box wall from the center outward. Dark Red, Yellow, and White hide in the back — match them to the remaining Boxes as they rotate in.

Level 30 Tips Recap

• Only two of the six front-row blocks are safe to tap at the start.
• Three empty belt slots is your minimum — Mystery Box reveals are random and need room to land.
• When the edge tubes fire, clear their drops immediately instead of letting them pile up.