User blog comment:Camalex97/did call of the dead even happen?/@comment-2192318-20110509200113

When Nikolai, Tank, Takeo, and Richtofen malfunctioned the Teleporter at Der Riese, the Teleporter teleported them to the Call of the Dead filming area. When the players complete Original Characters Trapped Richtofen gives them the Wunderwaffe DG-2. This explains why the DG-2 isn't in Kino der Toten. So, actually, Call of the Dead happened at the same time as Kino der Toten.