Based on the infamous and diabolically challenging microbe puzzle from The 7th Guest, this beautifully designed game consists of a quality 15" x 11" roll-up board, 49 double-sided microbes, 5 anti-bodies (optional play), a black velvet drawstring pouch and instructions. It's a game that anybody can learn to play in minutes but spend a lifetime mastering and will be a great addition to your tabletop strategy game collection. The board is a square grid divided into 7 rows and 7 columns. Each player begins with two microbes, colored blue or red. The microbes are placed at the four corners of the grid, with blue in the top left and bottom right corners, while red occupies the other corners. Red takes the first turn. During a turn, a player may move one of their microbes one or two spaces in any direction, including diagonally. If the player moves to an adjacent space, a new microbe is created on the space the microbe moved from. If the player moves to a non-adjacent space, the space on which the microbe began the turn remains empty. Any of the opponent's microbes which are in spaces adjacent to the space a player moves onto will be "infected," turning to the color of the player who has moved. Players are required to move unless no legal move is possible. The game is over when either all cells of the board are filled or all microbes on the board are the same color. The player with the most microbes on the board at the end of the game is the winner.