From Valve Developer Community
| This Steam Media File is available for download.
Duration: 15 min | Size: 348.0 MB
Enter steam://run/900 in your address bar to play.
You can also enter steam://store/900 or visit the store for installation.
Zombie Movie was the first media file announced for distribution through Steam. It was made by 2Chums Moving Pictures (Valve employees Michael J. Asquith & Ben Stenbeck).