Marble Sort Level 115 Walkthrough & Solution

Level 115 Board Overview: Two Sides, Two Locks, Zero Room

Level 115 splits the Top Tray down the middle with a thick wall, and neither half can free itself. The top two rows on both sides are chained-down grey Mystery Boxes — invisible colors, untappable, locked. The colors you’re juggling early are purple, red, light pink, and yellow.

The left zone is held by a brown Lock and Key chain. A purple key tile sits on the far-left edge, with a yellow and a red tile below the lock. The zone’s bottom row runs blue, two yellows, and a green — and below all of that, three purple tiles sit completely exposed.

The right zone is held by a purple Lock and Key chain. Below it you’ll find orange, green, and light blue tiles, with a gold key tile pinned to the far-right edge. The bottom row here is green, red, and two light pinks, with two yellow tiles sitting alone underneath.

Down below, four Box columns dictate the run. Column one starts light pink, then green, red, a Mystery Box, yellow. Column two starts red, then a Mystery Box, two light pinks, purple. Column three starts purple, then a Mystery Box and three yellows. Column four stacks red, purple, red, and two greens.

The Trap in Marble Sort Level 115

The trap is a swapped set of keys:

• The purple key lives on the left — but it opens the purple lock chaining the right side.
• The gold key lives on the right — but it opens the brown lock chaining the left side.
• The bottom Boxes want light pink, red, and purple immediately. Every blue, orange, or green tap before those Boxes ask for it is pure belt clutter.
• The Mystery Box roof stays chained until both locks die. Once it opens, blind-tapping those boxes is how runs fall apart one screen from the finish.

So the level is a sequencing exam: feed the front Boxes, dig down to each key, fire them across the wall in the right order, and keep the Conveyor Belt nearly empty the whole time.

Marble Sort Level 115 Step-by-Step Walkthrough

Discipline beats speed here. Don’t touch blue, orange, or green until a Box asks.

Opening: feed the front line

1. Tap the two light pink tiles on the right zone’s bottom row. They fly straight into the light pink Box fronting column one.
2. Tap the exposed red tiles on the right side to start filling the red Boxes at the front of columns two and four.
3. Tap all three purple tiles hanging below the left zone.
4. Those purples wipe out the purple Box atop column three, exposing a Mystery Box underneath. Leave it alone — hidden colors can wait.

Mid-game: trade keys across the wall

5. Clear the red tiles blocking columns two and four so the purple Boxes underneath surface.
6. Tap the purple key tile on the far-left edge. It drops through a purple Box, activates, and the purple chain on the right side shatters.
7. Now free the gold key on the right. Tap the green and light blue tiles guarding it only when matching Boxes are open; if the Boxes want yellow instead, pull yellows from the left zone to keep things moving.
8. Tap the gold key tile. It drops, activates, and the brown lock on the left side breaks. Both halves of the roof are now open.

Cleanup: blind boxes, one at a time

9. Drain everything visible first — the leftover blue, orange, and light blue tiles in the middle sections of the tray.
10. Touch a Mystery Box only when your belt has five or more empty slots.
11. Open two boxes, stop, and read the colors. Matches go home; misses park on the belt.
12. Slow-tap the rest one by one and match them into the final columns. Four blind boxes in a row is a guaranteed jam.

Level 115 Tips Recap

• Remember the swap: each side of the board holds the key the other side needs.
• Blue, orange, and green stay frozen until a Box explicitly asks for them.
• Late-game Mystery Boxes are a belt-space exam — never batch-open them.