A heroic expedition braves snow-whipped precipices and discovers the dreaded humanoids. But wait – these are extraterrestrial yetis who zipped in from outer space to conquer Earth by melting the polar ice caps with high-energy proton fields. Will mankind be global-warmed into surrender?

Directed by: Antonio Margheriti
Written by: Antonio Margheriti & Ivan Reiner & Charles Sinclair & Bill Finger
Runtime: 90 minutes
Related titles:
Cast:
Giacomo Rossi Stuart Giacomo Rossi Stuart
Cmdr. Rod Jackson 
Ombretta Colli Ombretta Colli
Lisa Nielson 
Renato Baldini Renato Baldini
Lt. Jim Harris 
Wilbert Bradley Wilbert Bradley
Sharu 
Enzo Fiermonte Enzo Fiermonte
General Norton 
Halina Zalewska Halina Zalewska
Lt. Teri Sanchez 
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Also known as:
  • Gamma I Quadrilogy Vol. 4
  • Snow Devils
  • The Blue Devils
  • The Devil Men from Space
  • The Snow Devils
  • I diavoli dello spazio
  • Dämonen aus dem All
  • Mort vient de la planète Aytin