Colony Flow! Levels 1641–1680 Walkthroughs & Answers

40 levels are listed in this block, rated expert. Every one of them has a full video walkthrough that plays the complete clear of its board, and new levels join the block as they are released.

Measured from each level's own board image, the busiest boards here are 1680, 1657 and 1664 — up to 11 colours on a single board. More colours means more separate blocks competing for the same slots, so those are the levels where the play order matters most and the ones worth watching first.

Every level in this block pairs the embedded video with a colour breakdown measured from its own board image: which colours the picture holds, how much of the board each one covers, and whether it sits in one run or is scattered across the picture.