In Scene Crasher, multiple objects are displayed for a brief period of time. Next, the screen is covered with visual static. Finally, the same picture will appear, but with an extra object added. The challenge of the exercise is then to identify and click on the object that was added to the scene.
As the exercise increases in difficulty, the time the objects are displayed is reduced and the time the static is shown is increased, and the background will change to reduce contrast.
Find more information about this exercise here.