The Yeti definitely exists and he was captured by unconscious soldiers who thought they could keep him prisoner easily...
Help the monstrous beast to escape and take revenge on the humans by carrying out a real carnage.
Destroy all on your path and kill mercilessly passers-by, police officers and soldiers that will stand in your way throughout the 16 levels of the game.
See also:
Miami Rex
Paris Rex
London Rex
NY Rex
Smilodon Rampage
Big Bad Ape