I like the fact that the game is one that I can basically spend 2 mins a day on to keep it ticking over - or I can spend two hours, tweaking, signing, training, farming.

Due to work patterns and having to travel across the country every week I often go days where I can't give the game any time what so ever, then end up with days where I can spend all day on it. Overall the basic aim (to get promotion) is so easy to achieve that even in work and travel heavy months its easy to play.