Mosquito is an 3rd person action game where the player plays as a mosquito, with a goal to survive and to infect other players. This develops on games like the disease creation game Pandemic, where the player simply develops a disease to destroy humanity on the Earth!

The game is set in a small town, so that the player does not need to fly far to infect the population. The mechanics of flight are fairly simple, the player hovers in the air when not pressing any buttons, holding down the right mouse button will orbit the camera, and the WASD keys can be used to move in the air. The player can bite townspeople with the left mouse button, which can infect them with the player's disease. The longer the player can maintain this bite, the more their blood level will be replenished. This functions as an energy level which is depleted during flight.

The other aspect of the game is player development, in two parts. In a menu style system, the player can choose traits to develop which can improve the player's blood capacity, flight speed, etc. or aspects of the disease that they carry like symptoms or level of contagion.

Image source Susan Ellis, retrieved 03/08/2016 from http://www.mosquito-va.org/nuisance.htm