Components
64 bi-color stones
8x8 board
Setup
The board is placed between the players and starts out empty.
The 64 bi-colored stones are set nearby so that both players have access to them.
One player plays black the other plays white.
Group - a set of 2 or more friendly orthogonally adjacent stones.
Play
Black starts, turns then alternate.
On a turn a player must,
Drop 2 stones (one of each color) onto 2 empty orthogonally adjacent spaces on the board.
If a player closes off an area that contains 2 to 4 spaces, either by surrounding them with dropped stones or by using a combination of dropped stones and the edges of the board, he then proceeds to fill the enclosed spaces with his own color stones.
The game ends when a player is unable to take his turn.
Object
The player with the largest group wins.