Colony Flow! Level 37 Walkthrough

Board Notes

Layout

The board opens in portrait view. The top half of the screen holds a pixel-art fox portrait: a seated fox with an orange body, two black ears, black eye and nose details, a small white chin tuft, two short black legs, and two white teeth clusters at the bottom corners of the muzzle, all set on a green background tile that fills the rest of the art frame. Below the dirt strip the working area is a 5-cell top active row plus a 3-row, 3-column source grid. The 5-cell active row opens as a single green 18 stack at the far left followed by five empty white buffer slots. Source row 1 reads brown 15, dark red 30, dark green 28. Source row 2 reads orange 25, light orange 24, dark yellow 30. Source row 3 reads yellow 2, light blue 28, dark yellow 4.

Goal

Green cubes from the green 18 in the active row must fill the large green background tile that fills the art. Brown cubes from the brown 15 in source row 1 plus the brown 30, brown 20, brown 11, brown 15, brown 13, brown 16, brown 2, brown 8, brown 11, brown 17, brown 16, brown 18, brown 6, brown 3, brown 19, and brown 1 refills that rise into the active row must fill the warm brown body shading on the fox. Dark red cubes from the dark red 30 in source row 1 plus the dark 22 and dark 1 refills must handle the deep maroon shadow band along the back and tail. Orange and light orange cubes from the orange 25, light orange 24, and the orange 20 and light orange 20 refills that rise into the active row must fill the main fox body. Dark green and light green cubes from the dark green 28, the light green 17, the light green 24, the light green 4, and the light green 31, light green 25 refills must cover the small green shading on the ear tips and tail tip. Yellow and dark yellow cubes from the yellow 2, the dark yellow 30, the dark yellow 4, and the late yellow 2 refills must close the small yellow accent cells. Light blue cubes from the light blue 28 in source row 3 plus the late light blue 18, light blue 2, and light blue 10 refills must handle the blue eye glints and the small blue accent cells. Dark/black cubes from the dark 27, dark 4, dark 12, dark 2, dark 6, dark 25, and dark 10 refills must close the ears, the eyes, the nose, the legs, and the thin black outline wrapping the fox silhouette. White cubes from the late white refills must close the chin tuft, the two teeth clusters, and the small white body cells.

Opening

The first stable opener is the green 18 stack at the far left of the 5-cell active row. Green 18 is the only green stack in the active queue and the green background is the largest color region in the pixel art, so opening with green 18 dispatches ten green ants up the dirt path in the first tap and the green cells closest to the ant hole start closing in the first beat. The second confirmed tap is again the green 18 stack (now showing 8), which dispatches the last eight green ants and clears the active row of its only opener. The five empty white buffer slots in the active row (cells 2, 3, 4, 5, and 6) are kept open so the rising refills (the brown 30, the dark green 1, the dark green 28, the dark 22, then the orange 20, the light green 17, the brown 20, the dark 1, then the brown 11, the brown 15, the brown 13, the brown 16, the brown 2, the brown 8, the light green 24, then the late dark 27, dark 4, dark 12, light green 4, dark 2, brown 18, dark 6, yellow 2, then the late brown 3, light blue 18, yellow 2, dark 25, light green 31, then the final brown 19, light blue 2, light green 25, dark 10, brown 1) can land cleanly as the source grid refills. The brown 15, the dark red 30, the dark green 28, the orange 25, the light orange 24, the dark yellow 30, the yellow 2, the light blue 28, and the dark yellow 4 in the source grid are all held for one beat so the green 18 wave can clear the green background perimeter before any fox body, accent, or outline color is sent.

Danger Zone

The riskiest point is the five empty white buffer slots in the 5-cell active row (cells 2 through 6). The video shows those five slots being filled with rising refills in quick succession (brown 30, dark green 1, dark green 28, dark 22, orange 20, light green 17, brown 20, dark 1, brown 11, brown 15, brown 13, brown 16, brown 2, brown 8, light green 24, dark 27, dark 4, dark 12, light green 4, dark 2, brown 18, dark 6, yellow 2, brown 3, light blue 18, yellow 2, dark 25, light green 31, brown 19, light blue 2, light green 25, dark 10, brown 1), and if the player taps those rising refills before the green 18 wave has cleared the green background perimeter, brown and orange refill ants get stranded behind active green ants on the dirt path and the fox body never closes. The other trap is firing the orange 25 in source row 2 while green ants are still walking the dirt path up to the green background, because orange ants use the same dirt path as the green ants and a premature orange click strands orange ants on the still-empty fox body cells and blocks the late orange 20 and light orange 20 refills that need to reach the fox body. Tapping the brown 15 in source row 1 before the green background is at least half-closed is also bad, because brown ants cross the green background cells that the green has to fill and stall on the still-empty fox body shading cells. Letting the dark red 30 in source row 1 rise into the active row before the green background is mostly closed strands dark red ants on the still-empty maroon shadow band cells and blocks the late dark red 20 refill that needs to reach the back of the fox.

Mechanics

Level 37 is a multi-stack color-routing board combined with a pixel-art completion goal and a single ant hole, with a fox-on-green-background scene that is the first fox portrait the run has used so far. The 5-cell active row plus the 3-row, 3-column source grid makes this a tall 14-stack working area with five empty white buffer slots, so almost every tap immediately changes a route. The fox pixel art has eight main color families (green background, brown body shading, dark red maroon shadow, orange and light orange body, dark green and light green ear and tail shading, yellow and dark yellow accents, light blue eye glints, black outline and face features) plus the white chin and teeth, and the player has to keep all of those routes staged at once. The 5-cell active row is the queue that pre-holds the green 18 opener from the start, and the 3-row, 3-column source grid underneath it acts as the supply that refills the active row as stacks are sent. The five empty white buffer slots are the only staging cells on the board, so the last small brown, dark red, orange, light orange, light blue, dark green, light green, yellow, dark yellow, and white refill waves still need a clean delivery after the bottom of the grid looks clear. Compared to Level 35's garlic-bulb scene, this fox scene is shorter on the source grid but has a much larger green background region and a warm orange-on-green body-and-background contrast that forces the player to keep the empty buffer slots open for the late refill waves instead of using them as active stack spaces.