Gamification is the use of game mechanics and game thinking to engage users and solve problems. RecycleBank is a green company located in New York that uses gamification to motivate people to recycle and engage in other environmentally friendly behaviors. Users earn points for their actions, which can be redeemed for rewards. Over 4.5 million members have earned over 6 billion points and recycled nearly 4 billion pounds of materials through RecycleBank's gamified system, showing how gamification can effectively encourage positive environmental actions.