This is a big driving force in Minecraft adoption too:
Minecraft does nothing to orient players on how they should interact with the software. There are no written instructions, video cut scenes, or training sessions to help the player along. When confronted with this situation, I drew on my past knowledge of construction toys and videogames, experimented within the virtual world, and searched discussion boards. In order to better understand “commonalities and problems with communicating play experiences for such an open- ended game,” Michael Thomét studies two online communities where players discuss Minecraft. His essay “Look What Just Happened: Communicating Play in Online Communities” shows that how people talk about the game is as important as what they are talking about.