Hex. Io is a fun new io game in the hexagon blocks world! Hex. Io is one of the best IO games. Draw hexagon lines to occupy the greatest area. This io game is a modern twist of famous hexagon games! Download Free Hex game: Hex online adventure! Capture blocks by enclosing an area with HEX game. Are you a fun of such games as snake online, tanks, agar or any other IO games?