Marble Sort Level 308 Solution: The Move Order That Clears the Board

Easy-Medium ★★☆☆☆ ~35 moves

Screenshots

Marble Sort Level 308 screenshot 1Marble Sort Level 308 screenshot 2Marble Sort Level 308 screenshot 3Marble Sort Level 308 screenshot 4

Step-by-step solution

Quick answer
  1. 1) Leave the outside edges completely alone and start by choosing the green box that rests against the divider's right face, guiding it into the live green receiver in lane two.
  2. 2) Pick the brown box against the divider's left face and steer it cleanly into the live brown receiver in lane three.
  3. 3) Let the freshly uncovered purple box (on the right, above the old green spot) fall into the live purple receiver in lane one.
  4. 4) Take the dark grey box (on the left, above the old brown spot) so it drops into the dark grey receiver that just turned live in lane three.
  5. 5) Collect the key fixed to the dark grey box on the board's right, then choose the light blue box down on the lower-left to flip the pink box that holds the second key.
  6. 6) Advance toward the grey key boxes up near the center-top, letting each key touch the belt to count, and skip the orange on the right since no orange receiver is live yet.
  7. 7) Clear the blue boxes on the left to crack the neighboring yellow Iced Box, then empty the unlocked dark grey receiver at once the moment the lower lock snaps.
  8. 8) Open the hidden boxes one at a time to read each color, fire the two top pipes only when a pair of empty receivers can take the flood, then sort the spill and the leftover icy edges to close out.

Level 308 Split-Board Key Trap

Getting stuck here is completely normal.

sphere Sort Level 308 uses one brutal middle-divide layout that forces one into empty one very exact path before this rest of the board even becomes playable.

this dominant shades one hold into deal using immediately sit Brown, Green, Purple, and Dark Grey.

this entire upper area sits split straight down this middle by a solid red divider.

At this upper, one hold two Tunnels marked using one 3, one bunch from secret cases , plus several Iced Boxes locking down the edges.

one hold keys attached into random cases on this top tiers, plus one desperately want them into available this locked Dark Grey lower case stuck deep in the lower right-center stack.

Do not panic plus start tapping the outer edges.

If one dump corner shades onto this Conveyor Belt too early, you lose.

Level 308 Center Divide Pattern

into beat this board, one want into understand exactly how this pieces are stacked against you.

That huge crimson divider on the center dictates your entire opening strategy.

east at this base from that divider, one hold one single Brown case over this west plus a single Green box on the right.

These are your absolute first priorities.

Above this Brown box sits a Dark Grey box.

Now look at this bottom Boxes waiting to receive marbles.

This lower arrangement sits perfectly synced using the center of the Top Tray .

However, look under that ready Brown bottom Box in column three.

east below that sits one Dark Grey case, plus beneath that sits the locked Dark Grey box.

one can't empty that column until you collect the Keys .

this Keys on sphere Sort Level 308 sit scattered in a truly annoying way.

One sits stuck over a Pink box on the left side.

Another sits stuck over one Dark Grey box on the right side.

Two more sit glued into grey cases higher onto near this Hidden Boxes (the ones with question marks).

this outermost rims from the Top Tray are massive bait traps.

this west flank holds one azure case at this lower, heavily guarded via one gold Iced case and a Pink Iced Box higher up.

this east flank holds some amber case parked east above one violet one, with a Red Iced Box nearby.

If one touch that amber case first, that shall sit over the Conveyor track plus kill the run since here sits zero ready Orange bottom Box to catch it.

one hold into play this board from the inside out.

Break this middle, take this bottom Keys , plus ignore this icy rims until one have the belt space to handle them.

Level 308 Level Overview

One bad release on this opening sequence will permanently clog your belt.

Level 308 Breaking the Central Divider Bottleneck

Leave the outside edges completely alone.

choose this emerald case resting over the right side of the central divider.

This sends east into this active Green bottom Box in column two.

choose this Brown case on the left side of the divider.

Send that straight into this active Brown bottom Box in column three.

send this newly exposed violet case (east side, previously above this emerald one) into this active Purple bottom Box in column one.

choose this Dark Grey case (left side, previously above the Brown one).

This shall slide perfectly into this ready Dark Grey lower case that just opened up in column three.

Level 308 Unlocking this Keys and Handling the Iced Boxes

one just punched one huge hole onto the center of the Top Tray .

Now we hunt this Keys into available that locked Dark Grey case at the bottom.

take this pass over this Dark Grey case on the right side of the board.

choose this Light azure box on the lower left side.

here sits one Light azure bottom Box waking up in column two.

This exposes this Pink box holding the second Key .

Keep pushing toward this grey Key boxes near the top center.

Dropping those keys does not require matching bottom colors.

They just want to hit the Conveyor Belt to register.

Ignore this Orange box on the right side.

here sits yet zero ready amber lower case anywhere near the top of the stack.

Start working over this azure cases over this west to shatter the adjacent Yellow Iced Box .

one want this ice broken before this lower board shifts again.

Level 308 Surviving this Hidden Boxes and Tunnels

Once that lower seal shatters, this board opens onto drastically, but the late-game pressure spikes.

empty the unlocked Dark Grey bottom Box immediately.

This triggers one cascade that uncovers exactly what one need to handle the upper section.

choose this secret cases (this question marks) one at a single time.

Wait into spot what color drops onto the Conveyor Belt .

If one spam-choose those, one shall bring three different shades at once and jam your belt instantly.

Once this top middle sits clear, trigger the two top Tunnels .

just choose them when one hold at least two empty lower cases ready to catch a massive color dump.

Sort this tunnel spillway, clean onto this remaining Iced cases on the flanks, and you are done.

Frequently Asked Questions

What is the main trap to avoid in Level 308?

The biggest mistake is tapping colors that have no active bottom Box yet. They park on your Conveyor Belt and burn limited slots, so clear the shades that actually have receivers first.

How should I open Level 308?

Ignore the upper layers and aim at the bottom row of the Top Tray. Feed the colors that already have open boxes, then work upward once the lower lanes shift.

When does the midgame color change happen in Level 308?

After the opening boxes fall, the lower columns swap what they demand. Watch for the new shades and only pull blocks that match a box sitting at the front of a lower lane.

Any tip for finishing Level 308 clean?

Keep at least a few empty belt slots before poking mystery or hidden boxes. Feed a revealed color the moment it matches an active box, and fall back to visible marbles when the belt gets tight.