I really have to say,that this is one of the most amazing games,i have played recently.
You get everything for short and longterms,for example.You have the chance to get into the dungeon every day,to collect your items to fullfill "the mission" tu succeed a part of the game.
You dont really need to play it straight,like 8 days,to achieve something.you can just start the game and go forward for like 20-30 minutes,if you dont have that much time on your hands,and just shut it off again,without a bad feeling about not having achieved anything,like you have in most games.
On the other hand,if you have a lot of time to spend,you can just play it straight forward,for several hours before you really get crazy by the music :D
It is just like Recette herself says "Capitalism ho".You just grind your way to victory,with some goals in sight,just grab everything you can and sell for the most profit avaidable.
It may not be THE game for everyone,but at least worth a try.