Andreas Illiger has Tiny Wings (iTunes Link) for the iPhone and iPod Touch and Tiny Wings HD (iTunes Link) for the iPad in the iTunes App Store for FREE (regularly 99-cents / $2.99) for a limited time.

You have always dreamed of flying – but your wings are tiny. Luckily the world is full of beautiful hills. Use the hills as jumps – slide down, flap your wings and fly! At least for a moment – until this annoying gravity brings you back down to earth. But the next hill is waiting for you already. Watch out for the night and fly as fast as you can. Otherwise flying will only be a dream once again.