All of the Microgaming casinos in the Casino Rewards Group of casinos plus some exclusive bonus offers. Casino Rewards. Founded in the early- to mid's, the Casino Rewards Group has become the largest affiliated group of casinos on the Internet. In total. Casino Rewards is a partner network that was formed to meet the needs of the frequent online casino player. Casino Rewards consolidates the loyalty programs VIP · Member Casinos · Loyalty Program · Casino Games.