Sandbox Challenges are optional missions appearing in Dead Rising 2: Off the Record's new Sandbox Mode. They are marked with floating, glowing star. There are 30 single player challenges and 30 Co-op challenges scattered around Fortune City. All challenges have to be unlocked by earning certain amount of zombie kills. Each challenge gets posted to its own leaderboard, and finishing every challenge will get you money and combo cards as a prize. __FORCETOC__