Down Perry Scope is a nice game appeared here on the best sites of games in the country in which you need skill and agility to complete your goal, to take care of the water with Perry the platypus who want to protect the kids, Phineas and Ferb. They are playing in the water with a submarine but the evil doctor Doofersmith is planing to suck all the water from the river and in that way he can hurt the kids. You have to help Perry stop doctor Doofersmith`s device that is at the bottom of the water. In this game using the right and left arrow you have to drive the submarine in the river in order to position Perry above the device. You have to hit the device using some rocks but before you have to collect them using the down arrows from the bottom of the screen. Be careful at the indications that you will receive at the beginning of the game and i am sure you will make a great job in this game with Phineas, Ferb, Perry the platypus. You can leave us a comment at the end of the game with your opinion about it and about Perry.