SNØBALL is a physical game that “uses a modified web-cam to track a infra-red signal from a electronic ’snowball.’”

The snowball has a impact sensor. Each time the ball hits the wall, it triggers a projection of graphical snow-crystals and points. The snowball circuit that is wrapped in bubble-wrap has a white led to recreate a the cool winter glow of bright winter days

[via w-m-m-n-a]
from techeblog