The Everygame affiliate program covers all the Everygame branded products including a sportsbook, casino and poker room aimed at a world wide audience subject to a few country based restrictions. They offer revenue share, multi tier and do not carry forward losses. This is one of the oldest and best gambling partner programs. They were formerly known as Intertops.
Rewards Affiliates is a casino affiliate program with a large number of online casino properties aimed at a worldwide audience subject to some country based exclusions. Unfortunately for such a great program, they do not let US players join. They offer revenue share, multi tier and do not carry forward losses.