Marble Sort Level 518 presents a board that looks open but is actually a trap. The key is to focus on the padlock and the Conveyor Belt, not the tempting edge colors.
The top area has two tall stacks separated by two vertical tunnels in the middle. The left stack, from top to bottom, holds Light Green, Orange, Light Pink, White, then Dark Blue, with Red and Yellow boxes at its base. The right stack contains Dark Red, Dark Blue, White, Light Green, Purple, Light Pink, and another Dark Blue, capped by a horizontal tunnel at its lower right. Bottom boxes: leftmost column shows a Dark Blue box on top of three Mystery Boxes. The next column has White, Purple, Red, Light Pink, and Yellow boxes. The third column hides a padlock on a Yellow box. The fourth column starts with a Light Pink box and three Mystery Boxes.
Marble Sort Level 518 Walkthrough
Focus on the edges first. Clear the visible Dark Blue and Light Pink, then the Red and White, to expose the key. Avoid the center tunnels until the padlock is broken.
The critical moment is when the padlock appears on the third bottom column. You must retrieve the key from a Yellow box under the right side of the top tray. If you use the tunnels before that, the Conveyor Belt will jam.
How to Beat Marble Sort Level 518 — Step-by-Step
Phase one: Clear the Initial Colors
- Tap the Dark Blue marbles from the top left and right, sending them to the bottom left column.
- Match the Light Pink marble in the left stack with the exposed Light Pink box in the fourth column.
- Connect the Red box at the bottom left of the top tray with the Red box in the second bottom column.
- Drop the White marbles from the upper stacks into the White box in the second column.
Phase two: Unlock the Padlock
- Now the third bottom column shows a padlock. Move to the right side of the top tray.
- Clear the horizontal tunnel and the marbles above the Yellow key box: drop Light Green and Purple only when matching boxes are ready (second column has Purple, Light Pink, Light Green).
- Tap the Yellow box containing the key. This breaks the padlock.
- Fill the now-open Yellow box in the third column to clear it.
Phase three: Handle the Mystery Boxes
- Let the first Mystery Box on the left slide up and see its color.
- If the color matches a marble in the center tunnels, tap the tunnel once to release that color.
- Alternate between left and right Mystery Boxes, always keeping at least three Conveyor Belt slots empty.
- Use the remaining top marbles to fill the last bottom slots and win.
Tips & tricks
- Keep the middle tunnels untouched until the padlock is gone.
- Always have a matching bottom slot ready before dropping from the top.
- When a Mystery Box appears, check its color and then release exactly that color from a tunnel.
Common mistakes
- Tapping the center tunnels too early floods the belt.
- Ignoring the padlock and trying to clear other boxes first.
- Filling the belt with leftover colors when a Mystery Box needs a specific one.
Marble Sort Level 518 FAQ
Why does my Conveyor Belt flood on Marble Sort Level 518?
It floods if you tap the vertical tunnels before unlocking the padlock, because they release random colors without matching slots.
Which color do I clear first on Marble Sort Level 518?
Clear Dark Blue first from the top edges, then Light Pink, Red, and White to expose the key.
How many moves does it take to clear Marble Sort Level 518?
There is no fixed count, but expect around 50-60 moves if you follow the correct order.
Do I need boosters to beat Marble Sort Level 518?
No, boosters are not required if you manage the Conveyor Belt and unlock the padlock in time.
What happens if I trigger the tunnels too early on Marble Sort Level 518?
The belt fills with random colors, leaving no space to move, and you likely run out of moves.
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