The adventure loving and experimenting duo of Phineas and Ferb have built a new submarine, which they are trying out in their backyard lake. Candace is not very impressed because she is enjoying the sunbath on her airbed. Dr Doofenshmirtz on the other hand is trying to use the suction vortex device to capture all the fish and sell them for profit. So, you must help Perry descend from the submarine to the lake bed to grab the sponges from the crabs and drop them into the device to block it. There are three levels of entertaining game play. Keep away from the jellyfish and avoid annoying Candace during the fish saving adventure. Down Perry-Scope is one of our many Arcade Games that we publish on TheGamerStop.com. This game is also tagged as a Phineas And Ferb game. Click the play button to start having fun. To play even more free games, view our popular and new games page. If you want to play more games like this, then you can simply check out the games inside the game tags that are the most relevant to your interests or the Arcade Games category or the games like this game page at the end of the game tags.