There are cupcakes floating in the sky! This revelation has spurred pigs into action: starting with one sitting on the ground, other porcine friends float in from the left or right astride a bubble, prepared to jump off and, hopefully, land atop the stack at the twitch of the player's mouse-clicking finger. The growing mound of pigs can veer to the left or right as it progresses -- a general trend of gradual lateral motion won't undermine the solid foundations -- so as to better intercept the floating cupcakes. Passing birds carry clocks, representing time bonuses, and clicking on the birds spurs them to drop the clock -- ideally on a floating pig beneath, positioned to intercept the bonus and increase the steadily-decreasing time counter back toward its initial level of 90 seconds. As long as the clock keeps ticking and the swine keep successfully landing, the player has an unlimited supply of vaulting pigs, but only seven can plunge to hammy ends before the game ends.