This is certified as the 100th article on the Kingdoms of Camelot Wiki!
A player is, unsurprisingly, a human who participates in Kingdoms of Camelot.
Any individual member of Facebook or MySpace can become a player, either from a link on the Game's application page or from a link posted by a friend. Players can choose between playing on a single domain or on several at once. Initially a player is placed in a random domain unless responding to an invitation from a friend to join him or her.
The highest title one has achieved in any domain determines the level of gift that will be unlocked and available for sending to friends once a day.
Even though it is not literally possible, every player is plotting takeover of your castle - you must preempt this and strike first!