Nightmare

From 1997-2000 it was shooting under the working title, The Zim House Horror. At first it was just a mostly improvised on-the-fly project that was shot during breaks from other films. During this period mostly dream/attack/death scenes were being shot. It wasn't until mid-2000 that major re-writes and additional shooting occurred which branched several of these previously shot scenes together. In shooting/writing this way over 40 scenes ended up on the cutting room floor. Several scenes were also shot multiple times because of this very improvised writing/production style.

It is never explained why the characters want to get into the "Zimmerman House".