Chromaflow

Chromaflow is a small puzzle game by Jason (jasp19), playable on its own site and on itch.io. The board is a grid of square tiles, each carrying a segment of one or more coloured paths. Coloured rings mark the endpoints. You swap tiles around and rotate them until each path runs unbroken from one endpoint to its partner. Some tiles are locked in place, shown with a padlock, which gives you a fixed point to build around.

Colours can mix where paths meet. A yellow line and a red line joining at a node can carry on as orange, so part of the puzzle is working out which colours feed into which. Undo, Reset and Hint buttons sit under the board.

Every puzzle is generated from a seed, which allows billions of unique boards. In Daily mode everyone worldwide gets the same puzzles each day. Easy is a single colour and you only swap tiles. Medium adds colour mixing. Hard mixes three colours and adds pivot tiles that turn in place. When you solve one, the game shows your moves and time with a Share button, and it tracks your daily streak. A calendar under the three daily cards opens earlier days, so a missed day can still be played. Outside the daily, Play gives you new puzzles at your chosen difficulty.

Chromaflow is free in the browser with no download. It has a colourblind mode and high-contrast display options, and it is designed for portrait screens.