Windows Media Player video - sent out to the media on a plain looking CD-ROM with the intriguing caption 'Enter It's Not Real'. In my opinion this is the way Tarsem Singh should have made 'The Cell' -- less dialogue, more music and eye candy (i.e. like the music videos he used to make before he tried to do a feature length film).
Quicktime video of interesting graphics that launch when you first load 'The Thirteenth Floor' Multimedia CD-ROM Press Kit in the CD-ROM/DVD-ROM drive of your computer