Hex grid
A hex grid is a board layout made of six-sided cells. Each hex has six equal neighbors, so movement and distance feel more uniform than on a square grid where diagonal moves are awkward.
Why it matters
Wargames, exploration games, and area-movement games favor hex grids because adjacency is symmetric — there's no "is diagonal one step or two?" debate. Hex tile shapes also pack tightly without gaps.
Example
Catan's island is a hex grid of resource tiles. Classic hex wargames like Twilight Struggle's spiritual ancestors use the same layout so unit movement is consistent in every direction.