Which stack should I lead with in Colony Flow Level 15?

Lead with the 35 yellow stack in the top-left of the 3x3 grid, then the 35 yellow stack in the top-middle, then the 35 cyan stack in the bottom-left. The cream-yellow background is the largest single region of the raccoon, and running the two yellow stacks as a paired wave keeps the dirt strip clean for the later cyan and brown waves.

Why does the route jam if I switch colors too early in Colony Flow Level 15?

The 34 brown stack is the only one that fills the thin eye-mask band, and the eye-mask sits on top of the white body and the cyan stripe. If yellow and cyan are not at least half-drawn, the brown ants stall on the still-empty body cells around the eye-mask, and the small black 1, 6 brown, and 4 brown dark-detail stacks waiting behind them are blocked. Hold the 34 brown until the background and the stripe are mostly closed.

Colony Flow! level guide

Colony Flow! Level 15 Walkthrough

easy 5 colors

Colony Flow Level 15 is a raccoon pixel-art board where a cream-yellow background, a rounded white body, a thin cyan face-and-tail stripe, a small brown eye-mask band, and a dark black outline all share the same single ant hole, so the colors have to enter the trail in the right order or the thin eye-mask cells get blocked behind a wave of white or yellow ants.

Board Notes

Layout: The board opens in portrait view. The top of the screen holds a pixel-art raccoon: a rounded white body, a cyan stripe running across the face and along the tail, a thick brown eye-mask band, a dark black outline wrapping the head, ears, eyes, and tail tip, and a cream-yellow background filling the rest of the art frame. A single dark ant hole sits on a dirt strip directly below the pixel art, and a small stream of yellow ants is already climbing up the trail in the very first frame. Below the dirt strip, the working area has a 5-cell top row of five empty white buffer slots, and a 3x3 grid of nine numbered cube stacks. The 3x3 grid reads, top to bottom and left to right, 35 yellow / 35 yellow / 35 white on the first row, 35 white / 34 brown / 35 white on the second row, and 35 cyan / 35 white / 35 white on the third row. A short cut of a 40 cyan stack and a 35 light stack is visible peeking out under the third row.
Goal: Yellow cubes must fill the cream-yellow background cells of the art frame. White cubes must fill the rounded white body, the face plate, and the paws. Cyan cubes must fill the cyan stripe that runs across the raccoon's face and along the tail. Brown cubes must fill the thick eye-mask band that wraps the raccoon's face. Black and dark-brown cubes must fill the outline of the head, the two ears, the two eyes, the small dark accents on the paws, and the tail tip.
Opening: The first confirmed tap is the 35 yellow stack in the top-left of the 3x3 grid. It is the safest opener because the yellow background is the largest single color region on the board, and a 35-cube yellow wave opens the yellow route without flooding the dirt strip with mixed-color ants. The second confirmed tap is the second 35 yellow stack in the top-middle of the 3x3 grid, which keeps the yellow background filling in a continuous run while the first wave cycles back to the ant hole. The third confirmed tap is the 35 cyan stack in the bottom-left of the 3x3 grid, which dispatches cyan ants up the trail to start filling the cyan stripe along the raccoon's face and tail. The 34 brown stack in the middle of the 3x3 grid is held in place for the eye-mask beat, and the five empty white buffer slots stay open so the new yellow, white, brown, and black stacks can rise into the active row as the top stacks drain.
Danger Zone: The danger zone is the 34 brown stack in the middle of the 3x3 grid. The brown eye-mask is a thin horizontal band that sits in the middle of the raccoon's face, and it shares the same dirt strip as the yellow background and the cyan stripe. If the player taps the 34 brown stack before the yellow background and the cyan stripe are at least half-drawn, the brown ants stall on the still-empty body cells around the eye-mask and the dark outline cubes waiting behind them are blocked. The five empty white buffer slots are the other trap: the video shows new yellow, white, and brown stacks rising into the buffer row in sequence (17 yellow, 18 white, 22 yellow, 35 white, 23 brown), and filling any of those slots with the wrong color leaves no staging space for the next yellow or brown wave. Tapping the 35 white stack on the right side of the third row too early is also bad, because white ants cross the body cells that the cyan stripe still has to fill and stall on the still-empty tail tip.
Mechanics: Level 15 is a multi-stack color-routing board with a single ant hole and a pixel-art completion goal. Unlike the wider 4-row boards in Level 10 or the 4-row supply columns in Level 8, this board has a 3x3 starting grid and a 5-cell buffer row, so the active queue keeps cycling as the player taps. The raccoon pixel art has a very thin brown eye-mask band that sits on top of the white body and the cyan stripe, so the brown stack has to land after the white and cyan cells behind it are at least half-filled. The black outline, ears, eyes, and tail tip only appear as very small stacks (the 1 black, 6 brown, 4 brown, and the 1 black that survive into the final beat), so the dark detail cells behave like the last-mile cells in Levels 5-9 and only land cleanly after the rest of the silhouette is recolored. so the last black 1, cyan 28, yellow 8, and white 8 still need a clean delivery after the bottom of the grid looks clear.

Quick Tips for Colony Flow! Level 15 (spoiler-free)

Tap the two 35 yellow stacks in the top row of the 3x3 grid as a paired wave before any other color goes onto the trail. The cream-yellow background is the largest single region of the raccoon and a continuous yellow run is what keeps the dirt strip clean for the later cyan and brown waves.
Resist tapping the 34 brown stack in the middle of the 3x3 grid before the yellow background and the cyan stripe are at least half-drawn. The brown eye-mask sits on top of the white body, and a premature brown wave stalls on the still-empty body cells and blocks every later dark-detail stack behind it.
Keep the five white buffer slots in the top row open through the first four beats. The video shows new yellow, white, and brown stacks (17 yellow, 18 white, 22 yellow, 35 white, 23 brown) rising into the buffer in that order, and parking the wrong color in any of those slots strands the next refill wave.

How to Solve Colony Flow! Level 15 — Full Solution

Tap the 35 yellow stack in the top-left of the 3x3 grid first. Yellow ants leave the stack and walk up the dirt strip toward the raccoon's cream-yellow background, where the background cells start filling. Wait for the first yellow ants to clear the trail before tapping the next stack.
Tap the 35 yellow stack in the top-middle of the 3x3 grid. A second yellow wave joins the first and extends the background fill across the top of the art frame, so the two 35 yellow stacks must run as a paired wave from the very first beat.
Tap the 35 cyan stack in the bottom-left of the 3x3 grid. Cyan ants walk up the dirt strip and start filling the cyan stripe that runs across the raccoon's face and along the tail. Hold the 34 brown stack in the middle of the 3x3 grid for the eye-mask beat.
Tap the 35 white stacks in the top-right, middle-left, middle-right, and bottom-middle of the 3x3 grid one at a time, letting each white wave clear the path before the next. The white ants deliver to the rounded white body, the face plate, and the paws. The five white buffer slots stay open so the new yellow, white, and brown stacks can rise into the active row as the upper stacks drain.
Tap the 34 brown stack in the middle of the 3x3 grid once the yellow background and the cyan stripe are at least half-drawn. Brown ants climb the trail and close the thin eye-mask band across the raccoon's face. This stack is the one the player is most likely to mis-tap early.
Tap the new yellow and white stacks (17 yellow, 18 white, 22 yellow, 35 white, 23 brown) as they rise into the active 5-cell buffer row. These are the refill waves for the yellow background and the white body, and they have to be drained before any small black or dark-detail stack is sent.
Tap the small black and dark-brown stacks (1 black, 6 brown, 4 brown) as they appear in the buffer row. Black and dark-brown ants close the head outline, the two ears, the two eyes, the small accents on the paws, and the tail tip. The dark detail cells are small and accept cubes slowly, so each tap has to be a patient single-tap beat.
Finish with the 40 cyan stack that rises from the row below the 3x3 grid and the leftover 28 cyan, 8 yellow, 8 white, and 1 black stacks. Cyan ants close the tail-tip accent, yellow ants finish the last background cells, white ants close the last body cells, and the final black 1 closes the last dark outline cell. The raccoon silhouette is fully colored once the last cube is delivered and the level banner appears.

Colors in this level:

Yellow, White, Cyan, Brown, Black

Common Mistakes to Avoid

Tapping the 34 brown stack in the middle of the 3x3 grid before the yellow background and the cyan stripe are at least half-drawn, which sends brown ants onto the still-empty body cells and blocks every later dark-detail stack behind them.
Filling one of the five empty white buffer slots in the top row with the wrong color, which strands the next refill wave (17 yellow, 18 white, 22 yellow, 35 white, 23 brown) before it can rise into the active row.
Tapping the 35 white stack on the right side of the third row before the cyan stripe has started, which dumps white ants into body cells that the cyan stripe still has to fill and stalls them on the still-empty tail tip.

Frequently Asked Questions

Which stack should I lead with in Colony Flow Level 15?
Lead with the 35 yellow stack in the top-left of the 3x3 grid, then the 35 yellow stack in the top-middle, then the 35 cyan stack in the bottom-left. The cream-yellow background is the largest single region of the raccoon, and running the two yellow stacks as a paired wave keeps the dirt strip clean for the later cyan and brown waves.
Why does the route jam if I switch colors too early in Colony Flow Level 15?
The 34 brown stack is the only one that fills the thin eye-mask band, and the eye-mask sits on top of the white body and the cyan stripe. If yellow and cyan are not at least half-drawn, the brown ants stall on the still-empty body cells around the eye-mask, and the small black 1, 6 brown, and 4 brown dark-detail stacks waiting behind them are blocked. Hold the 34 brown until the background and the stripe are mostly closed.