Colony Flow! Level 120 Guide: Clearing Order and Dock Management

To clear Level 120 in Colony Flow!, empty the outer perimeter lanes before tapping any interior ant clusters. Level 120 restricts board space with intersecting directional paths and limited dock holding capacity. Releasing interior rows early causes cross-traffic collisions and floods receiving slots with mismatched units, triggering an irreversible board jam.

Opening Moves: Clear the Perimeter First

Begin the stage by clearing unobstructed lanes along the board edges. Removing these exterior units creates open space across the grid and reveals the path markers controlling inner columns.

1. Tap perimeter lanes with direct dock access: Look along the grid borders for lanes that lead directly into a matching dock without crossing intersecting arrows. Clearing these groups immediately frees up movement lanes.
2. Remove isolated blockers: Target single ants or short queues blocking the heads of deeper rows. Clearing these front units prepares the primary columns behind them for mid-stage routing.
3. Leave central columns untouched: Do not tap the dense middle nodes during the opening sequence. Moving center units prematurely blocks the junction tiles that surrounding ants need to exit.

Mid-Stage Traffic Priority and Dock Capacity

Once the flank lanes are open, progress depends on matching ant volume directly to active dock space. If a line is released without sufficient room in its destination dock, the excess ants sit on holding tiles, rapidly cutting off neighboring lanes.

Before tapping an inner line, check the capacity of its matching dock:

• Verify dock headroom: If an active dock requires three units to close, only release a longer line if a secondary matching dock is already open to absorb the overflow.
• Wait for junction clearance: If two color streams share an intersection, wait until the last ant of the active group clears the junction marker before sending the competing color.

Final Core Clearance

After eliminating the perimeter and secondary blocker stacks, only the dense central clusters remain. Because the outer corridors and shared intersections are now empty, these interior rows can move without risk of path collisions.

Tap the dominant central spine color first to send it directly into its receiving dock. Once that main corridor empties, alternate between the remaining left and right inner queues until the board is clear and the stage completes.