Bonus Level...
	Secret level icons...

If you access the "Collection" or "Achievements" screen, you might see a drawing. Interact with it and you'll see a bonus level that you can now play.

Complete the indicated task to unlock the corresponding icon.

Icon	How to unlock
Agent from Phineas and Ferb show	Slide the mode selection screen to the very bottom and tap the blue duck.
Good Morning	In the collection menu in "Swampy" mode, slide your finger until the top of the screen appears and hold it. Keep sliding the page until you find a sun icon.
Mi Amore	In the achievement menu in "Swampy" mode, slide your finger until the very bottom of the screen appears and hold it. Tap the heart icon.
Mining Laser	In the challenge menu in "Cranky" mode, slide your finger to the top of the screen appears and hold it. Tap the skull icon.
Mysterious Planet	In the episode selection menu in "Mystery Duck" mode, tap the planet icon.
Planetarium	In the achievement menu in "Swampy" mode, slide your finger until the very top of the screen appears and hold it. Tap the planet icon.
Sara's Level	In the food group menu in "Cranky" mode, slide your finger until the very top of the screen appears and hold it. Tap the atomic icon.
Underground Adventure	In the collection menu in "Swampy" mode, slide your finger until the very bottom of the screen appears and hold it. Tap the spray icon.
Ups and Downs	In the collection menu in "Swampy" mode, slide left finger until the top of the screen appears and hold it. Tap the 2 up and down icon.