Colony Flow Level 138 is a challenging puzzle stage where the Cap family placement creates a greed trap that catches most players.
This walkthrough breaks down the core mechanic: recognizing when collecting all resources actually blocks your path to the exit, and how to intentionally leave certain caps untouched to maintain flow through the level. The key to beating Level 138 is resisting the instinct to clear everything.
You’ll learn which Cap family members to avoid, the exact sequence for navigating the danger zones, and the two critical decision points where one wrong move locks you into an unsolvable state.
Colony Flow Level 138 Walkthrough
Colony Flow Level 138 is a mushroom-themed routing puzzle where a large green rectangular background, purple cap, yellow stalk, dark rim, and tiny pale under-cap flaps all share one ant hole.
The safe sequence is background-first: drain the green rectangle until the outer wall is visibly shrinking, then bring the mushroom pieces through the established lane. The main trap is sending the purple cap before the field opens—it parks ants along the top arc while the broad green background stays thick.
How to Play Colony Flow Level 138 - Step-by-Step Solution
Start with green 28 and green 30.
The loaded row includes pale 40, gray 39, green 28, and green 30. Open the green field first. Use pale 40 and gray 39 for early highlight and edge cleanup as space becomes available.
Keep the green family moving.
Continue with the next green 30 and later green 34. Thin the rectangle from every side before the cap takes control of the route.
Bring in purple 35 and yellow 25 / 22.
Once the green rectangle is shrinking, drain the purple cap and yellow stalk. They are less likely to block the shared hole after the field has established a lane.
Clear dark rim stacks alongside the cap.
Run the dark cap-outline pieces with purple 35 to keep the top arc open and avoid stranded edge pieces.
Hold the pale under-cap flaps until late.
These small center pieces clog the same hole needed by the thicker stalk and cap rim. Send them only after the stalk and rim are already open.
Finish the remaining edges.
Clear the last purple cap pieces, green border, and pale flap details. If the center becomes crowded, return to the rim or stalk instead of forcing the pale pieces through.
Common Mistakes
- Sending purple35 before the green field is shrinking, which parks ants along the top arc and leaves the rectangular background untouched.
- Using the tiny pale under-cap flaps too early, which blocks the center while the stalk and cap rim are still thick.
- Treating the curved cap as the opener instead of solving the flat rectangular field first.
Quick Tips
- Open the green rectangle before the purple cap.
- Pair purple 35 with the dark rim stacks so the top arc does not strand.
- Save the tiny pale under-cap flaps for after the stalk and rim are already open.
Related Games
- Colony Flow Level 30 Walkthrough — This guide is a useful follow-up for players who want practice prioritizing the green 30 field stacks that open Level 138’s rectangular background.
- Colony Flow Level 35 Walkthrough — Level 35 is the most relevant companion for understanding how to delay purple cap routing until the larger green field has started clearing.
- Colony Flow Level 22 Walkthrough — Players struggling with Level 138’s yellow 22 stalk sequence can use this walkthrough to reinforce safer center-lane timing.
What makes the pale under-cap flaps risky in Level 138?
The pale flaps are tiny center pockets beneath a much larger cap and field. If they enter before the stalk and cap rim are open, ants sit in those small spaces and block the same hole the broader field still needs. Wait until the yellow stalk and dark cap rim have thinned, then bring the pale pieces through as controlled cleanup.