Mario Xtreme Adventure 2 Free Game Online: On this page, you’ll play the game Mario Xtreme Adventure 2, one of your best free Mario games! The adventure that Mario began in the first Xtreme game is not yet over, as he reached new lands in which he also has to defeat various monsters. You are here to help him throughout his journey, just as you did first time and you will have to prove that you are a true friend of him. You have a lot of lives but you should avoid losing them as you will also have to restart the level.