Found this article on cracked.com of all places, but its pretty interesting. http://www.cracked.com/article_18461_5-creepy-ways-video-games-are-trying-to-get-you-addicted.html What i found most interesting was that if a game was designed so that players did Fun things to get to an end Goal, completing all of those tasks and getting 'the Prize' was LESS rewarding than if the things they had to do leading up to the Goal/Prize were boring. Just looking at vanilla minecraft, it might explain why people hold right click for hours, mining stone, to finally find that Diamond. Also interesting is that neuroscientists citing studies done on rats are being consulted on how to create games people become addicted to enjoy. Thoughts?