Marble Sort Level 73 forces you to juggle two puzzles at once. The left side is a tightly restricted column trap with Tunnels and a valuable Multiplier Gate, while the right side is a sprawling three-column mess. The dominant colours are Light Pink, Dark Green, Dark Blue and Light Blue, stacked to bait you into filling the belt early.
The left side is only two columns wide, with an x2 gate at the very bottom and Dark Green, Light Green and Purple trapped under two Tunnels stamped with a 2. The right side holds your opening moves — White, Dark Blue and Light Pink at the lowest edges. The bottom Boxes want Orange, Light Pink and White first, then Dark Green, Dark Blue and Light Blue.
Marble Sort Level 73 Walkthrough
The biggest trap sits on the right: that exposed Dark Blue block looks easy, but its Box is in the second layer. Drop it early and it just sits on the belt. You need every inch of belt space to unearth the colours buried in the right-side stack, so the front row has to go first.
Leave the left side until the right side is partly hollowed out — the Tunnels and the gate are a midgame tool, not an opener.
How to Beat Marble Sort Level 73 — Step-by-Step
Clear the right-side blockade
- Drop the exposed White box in the middle-left of the right block into the third bottom Box.
- That uncovers an Orange box — drop it straight down to clear the second bottom Box.
- Drop the exposed Light Pink on the far right edge for the first and fourth bottom Boxes.
- Stop and let the front layer clear. The board shifts to Dark Green, Dark Blue and Light Blue.
Activate the Multiplier Gate
- Drop the bottom-most Dark Green on the left through the x2 gate to fill the Dark Green Box in the third slot.
- That pulls the left stack down and ticks the Tunnels from 2 to 1.
- Now drop that Dark Blue you ignored on the right to clear the Dark Blue Box, exposing a Light Blue above it.
- Drop the Light Blue to clear the front-left Box.
Manage the Tunnel reveal
- Clear the remaining Purple and Light Green on the left to empty the visible columns.
- The Tunnels pop open and drop Dark Blue and Dark Green — route them through the gate to clear the heavy back-row demands.
- Finish the final Light Blue and Yellow Boxes, using the belt to hold the top-row Purple if it blocks your last Yellows.
Tips & tricks
- Leave the exposed right-side Dark Blue alone until the front row clears and its Box appears.
- Use the x2 gate on Dark Green first — it's the colour the gate is there for.
- Route every Tunnel drop through the gate to double the back-row clears.
Common mistakes
- Pulling the Dark Blue on the right in the opening. Its Box is one layer deep, so it loops and burns a slot.
- Touching the left column before the front row is gone, jamming the gate's colour path.
Marble Sort Level 73 FAQ
Why does my Conveyor Belt flood on Marble Sort Level 73?
You pulled the right-side Dark Blue before the front row cleared. Its Box sits in the second layer, so the marble just loops on the belt.
Which color do I clear first on Marble Sort Level 73?
The White box in the middle-left of the right block. It clears the third bottom Box and starts the chain that uncovers Orange.
How many moves does it take to clear Marble Sort Level 73?
Roughly a dozen taps in three phases — clear the right blockade, double Dark Green through the gate, then drain the Tunnels.
Do I need boosters to beat Marble Sort Level 73?
No. The x2 gate and the Tunnels do the heavy lifting. Time the gate right and you won't need a single booster.
What happens if I use the gate on the wrong colour in Marble Sort Level 73?
The doubled colour has no Box, so it fills the belt at twice the rate. Only double Dark Green and the Tunnel drops.
Get the Official Game
Back to the full Marble Sort level list.