✦ Marble Sort Solution
Need help with Marble Sort Level 821? This page gives you an interactive visual guide with the exact board layout, the customer queue, and the complete tap-by-tap solution.
Visual Guide
Marble Sort Level 821 Visual Guide
The interactive board below shows the starting layout for Marble Sort Level 821. Press Play to watch the tap order animate, or Step to advance one tap at a time.
Level Details
Level 821 Details
Marble Sort Level 821 is a Hard level with 14 boxes in 10 colors serving 42 customers. There are no hidden boxes and the board fills in 2 waves.
- DifficultyHard
- Total Boxes14
- Colors10
- Customers42
- Hidden Boxes0
- Dispenser Boxes0
- Board Waves2
- Solution Taps14
Walkthrough
How to Solve Marble Sort Level 821
Only the marbled (bubbly) box at the front of each column can be tapped. A tapped box fires its 9 marbles to the customers that want that color; leftovers wait on the conveyor belt, and you lose if the belt fills up.
Follow the numbered tap order in the visual guide above — tap the boxes on your board in the same sequence. Marbles fly to the waiting customers first; anything extra lands on the conveyor belt, so the order is what keeps the belt from overflowing.
Strategy Tips
Tips for Marble Sort Level 821
- Match your taps to the front customers — a box whose color nobody wants right now sends all 9 marbles to the belt.
- Marbles already on the belt fly out automatically when a matching customer reaches the front, so a small buffer is fine.
- Hidden "?" boxes reveal as the wave in front of them clears — plan around the colors you already know.
- If your board does not match the guide, restart the level and confirm you are on Level 821.
FAQ
Marble Sort Level 821 FAQ
How many boxes are in Marble Sort Level 821?
Marble Sort Level 821 has 14 boxes in 10 colors, each holding 9 marbles.
How many taps does Marble Sort Level 821 take?
The solution uses 14 taps — one per box, in the exact order shown in the visual guide.
Is Marble Sort Level 821 hard?
This level is rated Hard. The belt only needs to hold 15 marbles at the tightest point of the solution.
Does Marble Sort Level 821 have hidden boxes?
This level has 0 hidden box(es) and 0 dispenser box(es).