The Mosquito Project
from Tiny Mantis Entertainment is basically a Flash remake of the PS2 game Mister Mosquito.
Here's the a description from the web site:
The world is plagued by a mysterious virus that was brought back from the past. It's your job to go back in time and suck the blood out of 4 people who may be carrying the disease and the antigen needed to save humanity.
Simply put, you control an insect out to do what it does best.
The quiz on mosquito facts is pretty informative as well.
Name: The Mosquito Project
Developer: Tiny Mantis Entertainment