System G is a peer-to-peer global gift exchange activity based on a 2x2 recycling forced matrix model. [1] It involves inviting two participants who each invite two more, completing your 6-position matrix and qualifying you to receive gifts. [2] There are three pledge levels - $100 receives $400, $250 receives $1,000, and $500 receives $2,000. [3] Your matrix can become eligible for rewards in multiple ways beyond just your own referrals.