 The opening credits feature a montage of clips from various other  Roger Corman (qv) movies, including  _Battle Beyond the Stars (1980)_ (qv),  _Forbidden World (1982)_ (qv), _Galaxy of Terror (1981)_ (qv),  _Humanoids from the Deep (1980)_ (qv), _Nebo zovyot (1960)_ (qv) and  _Piranha (1978)_ (qv). Sample footage from each of these movies  appears numerous times throughout the movie as filler footage, as  well as two full