Secret Game: Killer Queen

Thirteen average citizens have been kidnapped and holed up in a room within a building. No one remembers how they got there but everyone has been given a compact personal digital assistant. On that PDA is an assignment and a single card (2-10, Jack, Queen, King, or Ace). For example, the person who holds the Queen PDA has to survive for 2 days and 23 hours while the holder of the King PDA must obtain 5 other PDAs.