The challenge presented by this game is refreshing, but it is VERY badly design in its core and thus the game is full of bugs. In my particular case I had advance to a considerably high level and after the latest update my character couldn't move and I couldn't use my home to rest (which in this game you need or you die). The game is good but FULL OF BUGS so is not worth investing your time since you might lose your progress at any time (I contacted their support team - I was ignored COMPLETELY)