The competitions allow players to use their judgement and skill, trading against real-time, online fx data. Games can be played globally, and can be between any number of players and for varying prizes. Games vary in length from 1 4 hours, to day-long or week-long contests. During the games, players open and close virtual positions within realistic constraints such as overall exposure and stop-loss limits. Different strategies and tactics can be employed to achieve success. The winner is the player within each game who trades most successfully, based on P&L at game end.