The first weekly episode from American McGee's retelling of Grimm's fairy tales is now available as a free download (for one day only, which is today) to GameTap users everywhere. All that's required to play is the free GameTap client, a guest account and a 190 MB game download.

Collect all secrets in each of the six scenes to unlock the gallery.

GameTap's announcement
American McGee's Grimm: A Boy Learns What Fear Is
official web site
trailers
Wikipedia entry