Much of the platforming genre is based on nostalgia: nostalgia for games like Super Mario World, Donkey Kong Country or Sonic the Hedgehog. These titles dominated consoles and earned themselves legions of fans along the way. An entire sub-set of mobile games is based around recreating that magic, especially when it comes to gameplay.
Pizza Boy is one of those titles. Its premise is simple, like most games of its type tend to be: you're a pizza delivery boy looking to get a particular pie back from a bird who has stolen it.