With over 300 hours, Skyrim gets 5 stars in terms of Quantity. However, a basic combat system, mediocre graphics and numerous technical issues bring this down to its deserving 4 stars.
Skyrim gives you limitless freedom from the beginning, with you deciding who you want to be, what to do and when you want to do it. With the all of this taking place in a vibrant world with varying environments.
You spend most of the time completing quests, these can vary from fighting a civil war to resolving a love triangle. When not carrying out these, you can make weapons and armour, buy houses and you can get married if you choose to do so.
Skyrim is fantastic, whatever your doing in it. It is just a shame that minor annoyances keeps it away from that extra star.