Why are four cyan stacks used at the opening?

They immediately attack the broad sky while green 20 begins the grass, moving all three floor counters.

Which counter controls the endgame?

The 800 gate lasts 200 cubes longer and releases the final fox-body waves.

Colony Flow! level guide

hard 7 colors

Break the fox's two 600 gates and 800 gate by opening cyan 15/15/19/13 with green 20, then reserve a hole for every counter release.

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Tap cyan 15, cyan 15, cyan 19, cyan 13 and green 20, then wait for the first sky lane to return.
Alternate brown 20/22 and orange 25 with green 26 while the two 600 gates descend together.
Take each mystery reveal or newly exposed short card before loading another cyan 20/26 route.
After the first two counters reach zero, preserve a hole for the 800 gate's released fox-body stacks.
Clear the orange torso, white muzzle and tail tip with alternating orange, white, brown and cyan groups.
Finish the brown legs, green grass and cyan sky fragments, then wait for Victory.

Colors in this level:

Cyan, Orange, White, Brown, Green, Dark purple, Yellow

Filling every hole before the paired 600-gate release strands one of the newly exposed cards.
Treating the first two cleared counters as the finish leaves the right 800 gate and much of the fox active.

Board notes 5 details

Layout: An orange fox with a curled white-tipped tail stands on green grass beneath cyan sky. Three brown floor gates begin at 600, 600 and 800; five holes open with cyan 15/15/19/13 and green 20 above brown, orange, green and mystery reserves.
Goal: Reduce all three gates, then clear the cyan sky, grass, orange body, white muzzle and tail tip, brown legs and dark nose.
Opening: Tap cyan 15, cyan 15, cyan 19, cyan 13 and green 20, then wait for the first sky lane to return.
Danger Zone: The two 600 gates can release cards together while the 800 gate remains active, stranding a new fox color if all holes are occupied.
Mechanics: A triple-counter animal board pairs two 600 gates and one 800 gate with mystery cards and repeated 15-26 cube waves.

Why are four cyan stacks used at the opening?
They immediately attack the broad sky while green 20 begins the grass, moving all three floor counters.
Which counter controls the endgame?
The 800 gate lasts 200 cubes longer and releases the final fox-body waves.