Alter Ego
Honestly, this is one of the most fascinating (and sort of time consuming) games I have ever played on the internet. Alter Ego is a questiony sort of game. The questions are decisions you make throughout the life you have in the game. It begins at the stage of birth and you can live a long life, dying of old age. However, you can also make a wrong decision and die at a young age.
I guess I should put some sort of warning for the sexually-related and drug-related questions, which are all fairly common choices teenagers face in real life. Anyway, ye have been warned!
(I'm sorry if someone has once posted this game before.)