Open-ended gameplay

GameSpot reviews real life: "Volumes have already been written about real life, the most accessible and most widely accepted massively multiplayer online role-playing game to date. Featuring believable characters, plenty of lasting appeal, and a lot of challenge and variety, real life is absolutely recommendable to those who've grown weary of all the cookie-cutter games that have tried to emulate its popularity--or to just about anyone, really."

(via Stewart Butterfield)