A
game played on a
rhombus-shaped
grid of
hexagonal cells. Two
players each have a
color and a pair of
opposite sides of the rhombus assigned to them, and
take turns filling in one empty cell with their color. First to complete a chain of cells of his/her color connecting his/her two edges wins.
mkb tells me that there is a four-player version, played as two teams of two, but team members are forbidden to speak to one another.