Marble Sort Level 152 Walkthrough & Solution
Marble Sort Level 152 walkthrough: mystery '?' tiles and a numbered 3-tile hide the marbles, the belt arrives pre-loaded, and the Blue boxes close it out.
Levels · 152
Levels 460–460
Levels 487–487
Levels 500–500
Levels 517–517
Levels 550–550
Marble Sort Level 152 Walkthrough & Solution
Level 152 Board Overview: Hidden Behind the Mystery Tiles

Level 152 is a board that keeps its hand close. The top tray splits into two halves around a central divider, and most of what you can see at the start is not marble at all: a cluster of gray ’?’ mystery tiles fills the upper rows, capped by a single numbered blue tile reading 3. Two more blue tiles lower down have already counted down to 0 — spent stashes that will never release anything.
The marbles that are visible sit mostly on the rim. The far-left column stacks Red over Dark Pink over Cyan; the middle column holds a pair of Whites above a Brown; the right half carries White, Dark Pink, Green, and Orange. The front row of receiver Boxes asks for White, Brown, Blue, and Dark Pink — and here is the wrinkle: there is no Blue marble anywhere on the board. The Blue and Yellow Boxes behind it can only be fed by whatever the mystery tiles have been hiding.
Meanwhile the Conveyor Belt is not empty at level start. It is already loaded with Green, Dark Pink, Orange, and Blue, with more Greens and Dark Pinks queued behind it. You never get to start clean.
The Trap in Marble Sort Level 152
- The belt arrives pre-loaded. Green, Dark Pink, Orange, and Blue are already waiting before your first tap. Only Dark Pink and Blue match the opening front row — Green and Orange have no Box yet, so releasing more of them jams the belt.
- The mystery tiles are a blind draw. Every gray ’?’ tile pops open into an unseen color. Tap them all at once and the belt fills with surprises faster than the Boxes can accept them.
- The numbered 3-tile is a countdown, not a reward. It releases its three marbles as you work it, then becomes another dead 0 tile. Treat it as a trickle, not a burst.
- A Blue Box with no Blue in sight. The first row wants Blue, yet no Blue marble is visible at the start. The mystery tiles are the only source — another reason to ration them.
Marble Sort Level 152 Step-by-Step Walkthrough
Play the visible matches first, then earn the mystery tiles one at a time.
Opening: clear the visible matches

- Start with the White marbles in the middle column — two sit stacked above the Brown. Feed them into the White Box in the front row.
- Tap the Brown at the base of the middle column into the Brown Box.
- Move to the Dark Pinks: one on the left column above the Cyan, one on the right half. Both drop into the Dark Pink Box in the front row.
- Hold the Red and the Cyan for now — their Boxes sit in the second row, and the belt is already crowded.
- Pop a single mystery ’?’ tile and feed whatever it reveals only if a front or second-row Box matches. If it shows a color with no Box in sight, leave the marble on the tray.
- Work the numbered 3-tile the same rationed way, releasing its three marbles as the Boxes cycle forward.
- Do not empty every mystery tile at once. The Blue Box in the first row is waiting for Blue, and the Yellow Boxes in rows two and three want Yellow — save tiles for when those cycle forward.
Midgame: let the belt cycle
Once the opening White, Brown, and Dark Pink Boxes clear, the front row shifts to Red, Orange, Brown, and Green — and suddenly the pre-loaded belt colors have homes.
- Feed the Greens from the belt into the Green Boxes as they reach the front.
- Start dropping Oranges — the belt holds three of them, and the front row wants Orange twice over.
- Clear the Red from the far-left column once the Red Box is in the front row.
- Keep opening mystery tiles one at a time, always checking the front row before you commit.
- Treat the two spent 0 tiles as empty slots — they never release anything, so do not wait on them.
Cleanup: close out on Blue and Orange
The finish of Level 152 is a Blue and Orange affair. Two Blue Boxes and an Orange Box are the ones that seal the level.
- Empty the numbered 3-tile completely once the color it holds matches an open Box.
- Finish both Blue Boxes — the Blues hiding in the mystery tiles plus the ones riding the belt are the whole supply.
- Work the tail of the belt in order: Blue, then White, then Green, then Brown, then Gray. Each has its Box by now, so the last taps are pure cleanup.
- Leave the final stragglers — a leftover Green or Orange can sit on the tray while its Box slides to the front.

Level 152 Tips Recap
- The belt starts loaded: Green, Dark Pink, Orange, Blue. Only feed a color whose Box is front or second row, or the belt jams.
- Mystery ’?’ tiles are a blind draw — open them one at a time and commit only on a live Box.
- The numbered blue tile counts down from 3; the two 0 tiles are spent stashes, never a source.
- The endgame runs Blue, White, Green, Brown, Gray — keep that queue order and the final boxes fill themselves.
Related Articles
blog
Marble Sort Mystery Box Guide: Reveal Before You Tap
Learn how the Marble Sort Mystery Box works: how it reveals its color as it moves forward, when it's safe to tap, and how to dodge the wrong-color trap.
blog
Marble Sort Video Walkthroughs — All Levels on YouTube
Every Marble Sort level 1-20 solved on video — the complete walkthrough series by Rock Gaming Channel, embedded level by level with links to the written guides.
level
Marble Sort Level 1 Walkthrough & Solution
Marble Sort Level 1 walkthrough: dodge the checkerboard bait, tap the front Yellow blockers first, and dig out the buried Light Blue clusters step by step.
Was this helpful?
Thanks for the feedback!