The fish need saving from the evil Dr. Doof, so only you and Agent P can save the day in the newest addition to the Phineas and Ferb Games category on our website, a game which is called Down Perry-Scope, and which is unlike any other game you have played before in this category, and if you have had a lot of fun in the previous adventures, then we can guarantee you that you are also going to have a lot of fun in this one. You will find yourself underwater, trying to save the fish, and we will tell you how right now! Move the sub back and forth, avoiding rocks and mines. You have to lower Perry to get the sponges, and then put them into the vortex. Watch out for the jellyfish, and not to annoy Candace with the gas bubbles. Move with the arrow keys, flip the sub with the space bar. Shut down the vortex before too many ship can get too close to it and get sucked in it. That's basically everything you need to know about the game, so give it a try right now, and enjoy your time with this game, like we are sure you do all of our games!