Colony Flow Level 21 Answer Key, Walkthrough & Solution
Level 21 Video Walkthrough
Watch the full clear first, then use the written checkpoints below for each move. Want to practice first? Play Colony Flow free in your browser ↗
Level-specific solution
Colony Flow Level 21: soccer ball on a green field
Opening move: Open with a green block to carve out the bottom edge of the grass. Final move: Select the final black blocks to finish the very top of the design.
Board identity
soccer ball on a green field
The recorded palette is green, white, black. Use the screenshot to confirm the placement of these colors before starting the first move.
Step-by-step solution
Ordered moves for the soccer ball on a green field
Open with a green block to carve out the bottom edge of the grass
Move the first black and white blocks to open the lower ball patches
Monitor the numbers as the ants hollow out the bottom center
Bring up another green block to eat the right side background tiles
Queue the large connected block chain to clear the middle of the board
Clear the hidden boxes as they reveal their colors in the tray
Unleash a massive ant swarm to consume the upper green background arc
Select the final black blocks to finish the very top of the design
Second-source check
Opening and finish confirmed separately
Opening: Open with a green block to carve out the bottom edge of the grass. Finish: Select the final black blocks to finish the very top of the design. Its 8board-specific moves are listed above; the picture name and palette come from the other reference page.
Sources reviewed: primary level guide and independent cross-check.
📋 Written practice guide (web version)board preview, color breakdown & loading order for the playable web level
Board Preview
What You're Up Against
Level 21 paints Crown with 140 tiles across 4 colors, split into 9 cubes in the tray. You have 5 waiting slots and two nest holes.
- Yellow: 81 tiles → cubes of 25, 21, 20, 15
- Forest: 48 tiles → cubes of 20, 18, 10
- Jade: 6 tiles → cubes of 6
- Red: 5 tiles → cubes of 5
Step-by-Step Solution
This loading order was computed from the web level layout with a reachability-first strategy: always feed the ants colors they can actually reach, and never let all 5 slots fill with blocked colors.
Load the cubes in this order, letting the ants work between picks. Unless noted, a cube's tiles are fully reachable when you send it.
- Send the Yellow 25 cube.
- Send the Yellow 21 cube.
- Send the Forest 18 cube.
- Send the Yellow 15 cube.
- Send the Forest 10 cube.
- Send the Red 5 cube.
- Send the Yellow 20 cube. Only ~15 of its 20 tiles are open at this point — park it in a slot and let the surrounding colors clear the rest of the way.
- Send the Jade 6 cube.
- Send the Forest 20 cube. Only ~18 of its 20 tiles are open at this point — park it in a slot and let the surrounding colors clear the rest of the way.
Finish without boosters for 3 stars and bonus coins. If the board jams anyway, a Shuffle or Vacuum booster is the cheapest way out.