If you have ever played Mario Paint for the SNES, then you have probably played the Gnat Attack game (also known as Coffee Break). brunette_redhead’s game is a spinoff of this, created for the Wii.

There are two main game modes, the “Classic” mode, which is level based much like the original. There is also a “Swarm” mode which features endless enemies.

Changes:

Classic mode supports 2 players now.
An options menu has been added to select graphics mode and toggle music/sfx.
Swarm mode uses new swatter graphics.
Screen shots can be taken by pressing the 1 button at any time.
Pressing the 2 button brings up a help screen.
Pressing plus during gameplay pauses game.
Added border during gameplay.

http://wiibrew.org/wiki/Bugiin