Colony Flow Level 428 Answer Key, Walkthrough & Solution
Level 428 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 428: cream sailboat inside a dark green frame
Opening move: Move the first green and dark purple blocks to open the bottom edge. Final move: Send the final dark purple ants to eat the top border.
Board identity
cream sailboat inside a dark green frame
The recorded palette is cream, brown, green, black, white. Use the screenshot to confirm the placement of these colors before starting the first move.
Step-by-step solution
Ordered moves for the cream sailboat inside a dark green frame
Move the first green and dark purple blocks to open the bottom edge
Feed the brown ants to collect the cyan key on the left side
Move the second set of connected boxes to maintain your momentum
Clear the middle section of the hull to grab the yellow key
Finish the right side of the boat to secure the green key
Send the unlocked green blocks to clear the wide sky section
Send the final dark purple ants to eat the top border
Second-source check
Opening and finish confirmed separately
Opening: Move the first green and dark purple blocks to open the bottom edge. Finish: Send the final dark purple ants to eat the top border. Its 7board-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 428 paints Shroom House with 173 tiles across 4 colors, split into 5 cubes in the tray. You have 5 waiting slots and two nest holes.
- Black: 84 tiles → cubes of 43, 41
- Lime: 47 tiles → cubes of 47
- Coral: 24 tiles → cubes of 24
- Pink: 18 tiles → cubes of 18
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 Black 41 cube. Only ~28 of its 41 tiles are open at this point — park it in a slot and let the surrounding colors clear the rest of the way.
- Send the Black 43 cube. Only ~17 of its 43 tiles are open at this point — park it in a slot and let the surrounding colors clear the rest of the way.
- Send the Lime 47 cube. Only ~21 of its 47 tiles are open at this point — park it in a slot and let the surrounding colors clear the rest of the way.
- Send the Coral 24 cube. Only ~16 of its 24 tiles are open at this point — park it in a slot and let the surrounding colors clear the rest of the way.
- Send the Pink 18 cube. Only ~14 of its 18 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.