Buzzy

The hive fires bees by itself; you only aim it. A bee that crosses a flower comes out as two, three or five, and two flowers in a row multiply twice. Wasps leave the nest down a lane of their own and turn on the hive, and a bee and a wasp that meet take each other out. The nest has a number; it falls by one for every bee that reaches it. Twelve levels, each with one new thing: a flower that sways, a bud that grows as bees pass, a web to tear, flowers that wilt, a red flower that multiplies wasps too, darters, hornets, and a bumblebee to send when the ring round the hive is full. No upgrades: a level is won by where you aim, and scored by how fast.