You are a housefly, Your baby larvae have been flushed down the toilet by humans, and no you must venture into the damp, dark sewer to rescue them all! And flies lay lots of eggs, so that's a lot of kids. Be careful, The sewer is 10 levels deep, and home to many dangerous creatures who will eat you if you don't watch where you're flying.
Controlls
Left/Right Arrow keys- To rotate left/right.
Arrow up- To fly forward.
Arrow down- To slow down.