To celebrate the launch of the club's Official Facebook Game - Lionside Football, Hammers fans are being given three free match balls to use in this week's challenge to defeat fans of Liverpool.
West Ham United are proud to be an official team in Lionside Football, where fans can play against friends and other Hammers supporters who are part of the world's biggest social network.
Train your team and show your support for West Ham United as you play matches, collect coins, taunt your friends, and level up. Climb the table and unlock new challenges as you fight it out with other fans of teams in the Premier League.
Click here now to claim this exclusive free gift.
CLICK HERE FOR THE OFFICIAL WEST HAM UNITED FACEBOOK PAGE