Marble Sort Level 308 — Walkthrough and Solution

Marble Sort Level 308 presents a board split by a central wall, with the top area divided into two halves. The immediate challenge is to unlock the bottom-right Dark Grey box, which requires collecting keys scattered across the upper region. The trick is to focus on the center and ignore the tempting outer edges until you have space.

The top tray has a red divider down the middle. On the left side of this divider, at the base, sits a Brown marble, with a Dark Grey marble above it. On the right side, a Green marble sits at the base, with a Purple marble above it. The bottom receptacles are arranged in columns: column one wants Purple, column two wants Green, column three wants Brown, and column four wants Blue. However, column three has a Dark Grey box below the Brown, and underneath that is the locked Dark Grey box. The keys are located on various boxes: one on a Pink box on the left, one on a Dark Grey box on the right, and two on grey boxes near the hidden boxes at the top. The outer flanks contain Blue, Yellow, Pink, Orange, and Red marbles, but they are not immediately needed.

Marble Sort Level 308 Walkthrough

The bottom row of columns, from left to right, accepts Purple, Green, Brown, and Blue marbles. The center column three has a hidden Dark Grey receptacle beneath the Brown, which becomes active after you clear the Brown. The key is to start with the two central marbles that match the active bottom columns.

The biggest trap is the Orange marble on the right flank; there is no active Orange receptacle early, so touching it will clog your belt. Similarly, the outer Blue and Yellow boxes on the left are guarded by ice and should be left alone until later.

How to Beat Marble Sort Level 308 — Step-by-Step

Phase one: Clear the Center

1. Tap the Green marble on the right side of the divider, sending it to the Green receptacle in column two.
2. Tap the Brown marble on the left side of the divider, routing it to the Brown receptacle in column three.
3. Now tap the Purple marble that was above the Green, dropping it into the Purple receptacle in column one.
4. Finally, tap the Dark Grey marble that was above the Brown, sliding it into the newly exposed Dark Grey receptacle in column three.

Phase two: Collect the Keys

1. After clearing the center, the path to the right side is open. Tap the Dark Grey box on the right side that holds a key; the key will register on the belt.
2. Next, tap the Light Blue box on the lower left side; this feeds a Light Blue receptacle in column two and exposes a Pink box that holds another key. Tap that Pink box to collect its key.
3. Now push toward the grey key boxes near the top center. Tap them one at a time; they release keys that will register on the belt without needing a matching color.
4. Ignore the Orange box on the right for now; it is a decoy.
5. To break the ice on the left, start clearing Blue marbles from the left side. Tap Blue boxes to send them to the Blue receptacle in column four, which will shatter the adjacent Yellow Iced Box.

Phase three: Unlock and Clear the Rest

1. Once you have all keys, the locked Dark Grey box at the bottom right will open. Tap it immediately to clear it, which triggers a cascade.
2. Now the hidden boxes (question marks) become accessible. Tap them one at a time, observing what color drops onto the belt. Do not tap them rapidly.
3. After clearing the hidden boxes, the two top tunnels become available. Each tunnel holds three marbles. Wait until you have at least two empty receptacles before tapping them, then sort the spillway.
4. Finally, clear the remaining iced boxes on the flanks, using the receptacles that have opened up. Continue matching colors until the board is clear.

Tips & tricks

• Always prioritize clearing the central marbles first; they lead to the keys.
• When tapping hidden boxes, pause between taps to avoid flooding your belt.
• Use the conveyor belt wisely; if it gets full, you lose, so plan your moves.

Common mistakes

• Tapping the Orange box too early, which clogs your belt.
• Rapidly tapping hidden boxes, causing multiple colors to drop at once.
• Ignoring the ice until late, which can block necessary moves.

Marble Sort Level 308 FAQ

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