The Under Ground Adventure is an exciting game appeared on our site in which you have to do your best to help Phineas or Ferb to reach the finish line safely in every level. First of all you have to chose between Phineas and Ferb your favorite character with who you will take part of the adventure under the ground. In this game you need the arrows to move with Phineas or Ferb and space bar to jump with the character. The first levels are always easier, to help you get comfortable with the game but you don`t have to hurry to underestimate the difficulty of the game, because as you progress in higher levels you will have to work harder to accomplish your objective. You have to be careful at the traps and the obstacles from the road and if you hit something you will lose one of your lives and the level must be restarted. You have five lives in this game with Phineas and Ferb and if you lose them all you have to start the whole game from the beginning so be very careful at the track under the ground. At the top you can see the lives and the points you have earned.