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Marble Sort Level 306 Walkthrough & Solution

Marble Sort Level 306 walkthrough: Massive Mystery Box Wall and Linked Traps. Follow the verified order and keep the conveyor clear for the final clears.

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8/23/2026 4 min read

Marble Sort Level 306 Walkthrough & Solution

Level 306 Board Overview: Massive Mystery Box Wall and Linked Traps

Marble Sort level 306 opening board — Massive Mystery Box Wall and Linked Traps

The verified walkthrough identifies the opening board as Massive Mystery Box Wall and Linked Traps. The first confirmed moves are: Open by tapping the first Blue marbles in the Top Tray and sending them into the bottom-left Blue Box. Then: Route the next Blue marbles into the middle-right Blue Box, then send a set of Orange into the middle-left Orange Box. The next safe order is recorded below so the belt does not fill with bait.

The Trap in Marble Sort Level 306

  • Opening bait: Once those three drop, the bottom reveals the linked Pink and Brown Connected Boxes, so fill them together since they always drop at the same moment.
  • Board order: Do not drop Green anywhere, since the far-right Green Box is pure bait with no exposed Green marble in the tray.
  • Belt discipline: Use only the first verified clears here; do not spend belt space on a color without an active receiver.

Marble Sort Level 306 Step-by-Step Walkthrough

Opening: follow the safe first clears

Marble Sort level 306 mid-solve board

  1. Open by tapping the first Blue marbles in the Top Tray and sending them into the bottom-left Blue Box.
  2. Route the next Blue marbles into the middle-right Blue Box, then send a set of Orange into the middle-left Orange Box.
  3. Once those three drop, the bottom reveals the linked Pink and Brown Connected Boxes, so fill them together since they always drop at the same moment.

Midgame: open the next receiver path

After the opening clears, let the next exposed groups move only when their receiver is ready.

  1. Do not drop Green anywhere, since the far-right Green Box is pure bait with no exposed Green marble in the tray.
  2. With the linked boxes clear, the Orange and Red Arrow Boxes activate, so make sure the matching Orange and Red bottom Boxes are exposed before triggering them.
  3. As the gray wall drops, wait for each Mystery Box to reveal its color before committing it, and never blind-drop three boxes that could turn out to be dead weight.

Cleanup: finish the remaining sequence

The final phase follows the remaining source order. Pause whenever the belt starts to fill.

  1. Prioritize matching whatever colors the wall hands you, and try to empty one entire bottom column so you have an emergency dumping ground.
  2. Before you open the two top Gift Boxes, check your belt: if more than two leftover sets sit on it, wait, then once the wall feeds you the Green you need for the far-right Box, clear the deepest boxes and beat the level.

Marble Sort level 306 final board

Level 306 Tips Recap

  • Once those three drop, the bottom reveals the linked Pink and Brown Connected Boxes, so fill them together since they always drop at the same moment.
  • As the gray wall drops, wait for each Mystery Box to reveal its color before committing it, and never blind-drop three boxes that could turn out to be dead weight.
  • Before you open the two top Gift Boxes, check your belt: if more than two leftover sets sit on it, wait, then once the wall feeds you the Green you need for the far-right Box, clear the deepest boxes and beat the level.

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