Too Human Blog #39 plus new images and info:
"In computer gaming, eye candy has been used to describe a vfx (visual effect) as something that has a visual aesthetic quality, but is not essential to story or game play. Special effects, however, do add a layer of realism to a level to make it come alive and enlighten. By enlighten I mean that the vfx informs the player by providing feedback. For example, a vfx can tell the player how their fight is progressing in a boss fight. If your firing your weapon and the enemy starts to smoke, you know you are doing damage. A large final explosion, with all the Hollywood style pyrotechnics thrown in, provides sweet closure to a hard fought boss encounter. "