So, this is my contest entry: Whack-A-Color for the CSE
It shows you random color to look for, and then shows a 3x3 screen of different color squares. You must "hit" the square that is the color shown before the game starts. To hit the color, you will use the numpad. eg: if the color is on the top right, hit the [7]. For every color you "hit" you get one point.
Oh yeah, and there is a timer.

Scoring: The scores are displayed once the timer runs out, they are color coded, so RED<=5 points and so on.

The top right is the color to hit, and the bottom right is your score. Scoring is as follows:
BLUE = 5
GREEN = 10
ORANGE = 15
RED = 20
Yellow = 25
PURPLE = 30
Download here.EDIT (DJ): Removed unnecessary text scrolling tag usage