Maniacal Rage pretty much perfectly describes my feelings about Tiny Wings, and why you should buy this evil, hateful game right away.
And speaking of setbacks, why can't this stupid fucking bird follow the laws of physics? Why does he sometimes smoothly navigate slopes while other times smacking his fat chest on the crest of hills that seem perfectly shaped? Why is island 4 full of curves that seem designed to be impossible to smoothly traverse as if Andreas Illiger--that rotten bastard, that complete asshole--has purposefully designed them to spite me?