The second the board loads it gives you four full three-marble blocks — Blue, Dark Red, Light Green and Yellow — and they read like a free rapid-fire sweep. Tapping all four blind will choke the belt on the spot.
The early colours are Blue, Light Green, Yellow and Dark Red, but the bottom Boxes decide exactly when each one is legal to play. Both top corners are sealed with a 3, and you can't touch the back-row marbles until you've cleared three Boxes.
Marble Sort Level 101 Walkthrough
The key is the second column of Boxes: a Blue Box on top hiding a Light Green Box, which hides a Yellow Box. Your front Boxes are Light Pink, Blue, Dark Red and another Dark Red. Blue, Light Green and Yellow in the tray are all ready — but hit Light Green or Yellow before their Boxes are uncovered and they just sit on the belt.
A single Light Pink also pops out when the Blue clears, and it's bait — you don't have three Light Pinks yet. The entire goal is firing that Blue, Light Green, Yellow cascade to satisfy the 3-locks.
How to Beat Marble Sort Level 101 — Step-by-Step
Break the front line
- Send the Blue block on the bottom left into the Blue Box in the second column.
- The Blue clears and exposes the Light Green Box — tap the Light Green block to clear it.
- That exposes the Yellow Box at the bottom of the column — tap the Yellow block on the front right to clear it.
- Send the Dark Red block to clear one of the right-side Dark Red Boxes.
- Four clean clears satisfy the 3-lock on the corners, unlocking the back row with your belt empty.
Manage the mid-board unlocks
- The corners unlock and reveal Purples, Browns, Greens and that lone Light Pink.
- Match singles to their active Boxes — clear a Purple Box with the single Purples from the second and third rows.
- Don't tap the Light Pink until you can see two more Light Pinks in the back rows.
- Dig methodically to the back-right for the Dark Red you need for the remaining Dark Red Boxes.
Survive the late jam
- Always finish a full Box before starting a new colour.
- Use the open top corners to reach the remaining bottom-row colours.
- Only drop Brown and Green when their Boxes are the absolute front layer — then the board collapses.
Tips & tricks
- Ignore the Light Pink Box completely at the start — the single Light Pink is bait.
- Follow the Blue, Light Green, Yellow cascade in the second column exactly.
- Your belt should be empty after the opening cascade, which is what makes the midgame safe.
Common mistakes
- Hitting Light Green or Yellow before their Boxes are uncovered, dumping them on the belt.
- Tapping the single Light Pink early — it becomes a permanent roadblock since you lack three of them.
Marble Sort Level 101 FAQ
Why does my Conveyor Belt flood on Marble Sort Level 101?
You hit Light Green or Yellow before the second column uncovered their Boxes, so they sat on the belt instead of clearing.
Which color do I clear first on Marble Sort Level 101?
The Blue block into the second column's Blue Box, then Light Green, then Yellow — the cascade that unlocks the whole board.
How many moves does it take to clear Marble Sort Level 101?
The opening cascade is four clean clears, then the midgame singles and the late-game Brown and Green. Around a dozen taps.
Do I need boosters to beat Marble Sort Level 101?
No. Nail the Blue, Light Green, Yellow cascade and the corners unlock on their own. Boosters won't sequence it for you.
What happens if I tap the single Light Pink early on Marble Sort Level 101?
It drops onto the belt without clearing a Box, and it sits there as a permanent roadblock until the back rows open.
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