Archipelago is a story/role-playing game where each player controls a major character. Player take turns directing and playing out a part of their character's story, leading them towards their selected point of destiny, while other players interact with and influence that story.
The link shown below is for the free PDF version of the game. A version with printed cards is also available via DrivethruRPG: http://www.drivethrurpg.com/product/147623/Archipelago
Using Destiny Points
The destiny point is one of the most important parts of the game. It's what keeps your stories tight, what stops them from just flowing out and ending nowhere. You know what your character's destiny is for this session -- play towards it! In each scene you'll be steering your character towards their destiny, and on the third or fourth turn you play, they should face that destiny.
Other players should help you get to the destiny point -- by playing relevant secondary characters, describing fitting events etc.
After your destiny point has been played out, you may choose to let your story rest for this session. If so, you still participate in the others' stories as always, but when it's your turn to portray your character, just skip your turn.
When all characters have faced their destiny points, it's probably a good time to end the session.