You can win more rewards by Inviting your friends to join WOOP. You can earn 10 points for up to 10 friends invited to the campaign. If you invite more than 10 valid friends, you won't get extra points but this will count in determining the user the invites most number of valid friends invited to join the campaign till the end of campaign. Kindly note that a valid friend means your friend has completed certain missions in the ongoing campaign.