YouTube sensation MrBeast has turned a grocery store endurance challenge into an unprecedented year-long food contest after the final four contestants declined the initial reward. What started in January as a $250,000 final person remaining challenge in Greenville has developed into a million-pound stakes, with the remaining players deciding on Day 67 to alter their approach and attempt to eat through an entire supermarket's stock. The twist represents a major change from MrBeast's usual structure, signifying the first time the content creator has openly reworked a challenge partway through after contestants refused to accept the initial winnings. The stunt now...