Hexade

Hexade is Havannah's mirror-image cousin: same board, opposite obsession. Where Havannah players spend the whole game chasing connections, Hexade players are hunting for shapes — land a straight line of six, a tight little triangle of six, or a six-stone ring around an empty hex, and you're done. Simple to state, surprisingly slippery to actually pull off, since building toward one shape often tips your opponent off in time to block it.  Read the complete rules here.