Tomb Raider Underworld in the 8th sequel of the famous Tomb Raider gaming series and was released in 2008. Crystal dynamics was the developer of this game and this was the third game in series to be developed by them.
Tomb Raider Underworld continues the story from where the TR : Legend left it or finished it. It explains the part which was remained unexplained in the previous parts of the game i.e TR : Legend and Tomb Raider ; Anniversary.