Learn about creating hexagonal tile based games in this comprehensive Tuts+ tutorial.
Juwal Bose has released a new tutorial over on Envato Tuts+ all about creating the game minesweeper in Phaser but using a hexagonal layout:
"In this tutorial, I will try to introduce the interesting world of hexagonal tile-based games using the easiest of approaches. You will learn how to convert a two-dimensional array data to a corresponding hexagonal level layout on screen and vice versa. Using the information gained, we will be creating a hexagonal minesweeper game in two different hexagonal layouts.
This will get you started with exploring simple hexagonal board games and puzzle games and will be a good starting point to learn more complicated approaches like the axial or cubic hexagonal coordinate systems."