My entry for this years 48h Game Competition at http://www.ludumdare.com. The theme: Light and Darkness.

Your name is not of importance. Your mission is simple:
Top secret data has been separated and hidden in several countries. Break into the buildings and retrieve the secret data. The data is usually kept in a green cabinet. You must not be detected. Go inside unseen and find the cabinet. Once a guard sees something suspicious like a light which doesn't belong or hears a sound he will start the alarm. Once the alarm is on you cannot escape. We will have to deny any knowledge.