An entry in the 2001 About.com 8x8 Game Design Competition.
You need:
* One 8x8 playing surface
* 40 Poker chips in 5 colors (e.g. 8 red, 8 yellow, 8 green, 8 blue, 8 white)
Each player selects a color. Each player in turn (clockwise if more than 2) places one piece of any color, on any vacant square, alongside a differently colored piece or pieces, if any, already in play. The first straight line of four adjacent pieces with a player's color at each end wins for that player.
http://boardgames.about.com/library/games/on/bl-8x8-speckles.htm