Dots and Boxes - Dots and Hexagons: Describes the rules for playing on a squared grid and introduces a variation of the game.
Eric Weisstein's World of Mathematics: Dots and Boxes: Provides the basic rules and explains different strategies for playing.
Mathematical Games: Sprouts: Brief summary of the game with diagrams.
Pencil & Paper Games Plaza: Tic Tac Toe: A simple explanation of how to play.
Pencil and Paper Games: Instructions for playing Tic-Tac-Toe, Squares, Sprouts and Othello.
Pencil and Paper Games: Animated instructions showing how to play Sprouts, Pipelayer and Capture.
Stop Gate: A variation of Dots and Boxes that can be played on a checkerboard or on paper.
The Game of Col: Explains the rules and includes printable maps made by kids.
The Games Compendium - Pencil and Paper Games: Descriptions of games that can be played in teams.