The purpose of the game is to catch butterflies and avoid the bees. Catch
a butterfly with a net. You score points when a butterfly is caught. Avoid
the bee sting by ducking down. You can get to the next level when you
catch all the butterflies and going through the yellow gate.
Use the left and right arrow keys to move forwards and backwards. Up arrow
key makes you jump. Use the space bar to swoop the net.
Ten points for each butterfly. Every 1000 points, a life is added, only
if you are short of three lives.