Colony Flow Level 420 Answer Key, Walkthrough & Solution
Level 420 Video Walkthrough
Watch how to clear level 420 without boosters. Want to practice first? Play Colony Flow free in your browser ↗
📋 Written practice guide (web version)board preview, color breakdown & loading order for the playable web level
Board Preview
What You're Up Against
Level 420 paints Owl with 140 tiles across 4 colors, split into 7 cubes in the tray. You have 5 waiting slots and two nest holes.
- Cyan: 60 tiles → cubes of 25, 23, 12
- Pink: 40 tiles → cubes of 40
- Magenta: 38 tiles → cubes of 30, 8
- Teal: 2 tiles → cubes of 2
⚠️ 1 hidden “?” cube in the tray.
Spoiler: what they hide
Teal 2
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. Tap hidden “?” cubes only when you have slot room to absorb a surprise color.
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 Cyan 25 cube.
- Send the Cyan 23 cube.
- Send the Magenta 8 cube.
- Send the Magenta 30 cube. Only ~15 of its 30 tiles are open at this point — park it in a slot and let the surrounding colors clear the rest of the way.
- Send the Cyan 12 cube.
- Send the Teal 2 cube.
- Send the Pink 40 cube. Only ~18 of its 40 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.