Reward Cycle involves a migration from an old contract to a new one. Users are instructed to follow the pinned message for detailed instructions on migrating their tokens to the updated version, with a warning against fake groups. Related projects include GreenReward (GRW), a Polygon-based token funding eco-conscious initiatives, and REV, a community-driven rewards token powered by a renounced smart contract. Both GRW and REV offer incentives to holders, with GRW providing liquidity locking and vesting schedules while REV distributes MATIC rewards.