Colony Flow! Level 1320 Walkthrough: Pathing and Grid Fill Strategy

To clear Level 1320 in Colony Flow!, connect the long-range central color pairs first to build a structural core, then route remaining paths around them to achieve 100% grid occupancy without crossing lines.

Pathing Priority and Execution Order

Level 1320 features a dense grid where improper initial connections block subsequent lines. Establishing long connections across the middle early prevents dead ends and keeps outer channels open.

Identify long-distance central pairs: Locate the color pairs that span across the middle of the grid. Connect these first to form the primary structure.
Route secondary colors: Draw shorter connections into the remaining open spaces around the central lines.
Use direct lines: Avoid unnecessary snaking or tight turns that take up extra cells needed by adjacent colors.

Achieving Total Grid Fill

Connecting every color pair is only part of the requirement; Level 1320 requires filling every open square on the board to trigger completion.

Check the corners: Unoccupied cells frequently accumulate at the outer corners of the board.
Wrap perimeter paths: If empty squares remain after connecting all pairs, backtrack and extend long paths along the outer border to consume remaining space.
Maintain clearance: Ensure extended lines do not split unassigned board areas into isolated, unreachable sections.

Resolving Bottlenecks and Intersections

Because paths cannot cross, an intersection indicates an incorrect route early in the sequence.

Failure Signal	Cause	Recommended Action
Path intersection	Central lanes blocked by short paths	Clear short paths; route the longest pair along the extreme outer edge.
Empty squares remaining	Paths routed too directly	Extend path lengths by wrapping them around grid borders.
Cut-off board sections	Tight corners blocking cell access	Straighten turns to leave buffer cells open for adjacent lines.

If a specific path continuously blocks other colors, reverse its drawing direction from the opposite node or move its line to the outermost border to free up central space.