The Core Three That End Runs
These three show up from the very first levels and decide almost every loss.
1. Conveyor Belt Pressure
The belt only holds a limited number of marbles, and every marble stays on it until it reaches a matching box. Drop out of order and the belt fills with homeless pieces — once it's full, the level ends. Counter: treat every drop as a commitment, never release a marble unless its box is ready, and keep one lane open for strays.
2. Buried Colors
The top tray stacks marbles on top of each other, so the color you need is often buried under other colors. Every marble you move to reach it eats belt space. Counter: open buried colors early, and use the Magnet to pull the exact box you need instead of clearing the stack above it.
3. Elevator Floors
A late mechanic where the visible bottom boxes are only the current floor — clear all 4 boxes and the next floor rises. You can only work with what's in front of you. Counter: favor clearing the current boxes efficiently rather than hoarding colors you can't use yet.
The Full Mechanic Glossary
Every block, gate and helper the game introduces, and the one-line trick to beat it.
Knit Trays
Drop matching knit balls to break the knitted columns.
Light Marbles
Collect them all to make them vanish.
Swap Box
Drop a nearby box to activate it, then time your moves as the door opens and closes.
Pillar
Drop nearby boxes to shrink the Pillar down.
Color Panels
Clear the matching color to open the panel.
Ice Trays
Clear nearby boxes twice to break the frozen tray.
Trio Box
Drops three colors at once — a fast way to rack up clears.
Ice Box
Drop two nearby boxes to break the ice.
Mystery Box
Drop it to reveal what color is inside.
Center Tunnel
Drop nearby boxes to empty the center tunnel.
Pins
Drop the box at the pin head to release it.
Locked Pallet
Drop keys to open the locked bottom boxes.
Crates
Drop 3 nearby boxes to open them.
Gift Box
Drop nearby boxes to open surprise gifts.
Connected Pallet
Clear the linked bottom boxes to open the stacks below.
Locked Gate
Drop the matching key to open the gate.
Multiplier Gates
Double the marbles that pass through.
Panel
Fill enough boxes to open the Panel — some demand 16 clears before they budge.
Arrow Box
Drop the box it points to first.
Connected Box
Linked boxes drop together.
Tunnels
Empty the tunnel to release the boxes inside.
Hidden Box
Open the nearby boxes to reveal its color.
The Common Thread
Every single one of these mechanics punishes the same habit: dropping without a plan. Belt pressure punishes homeless drops, buried colors punish ignoring the stack order, Panels and Gates punish serving the wrong box first. Fix the drop order and all of them get easier at once.
The calm surface is the trap. Marble Sort is a sequencing game — the obstacle isn't the belt, it's your order of operations.