Mega Piranha (also known as Megapiranha) is a 2010 science fiction disaster film produced by The Asylum. It was directed by and stars , and . In the tradition of The Asylum's catalog, this film is a mockbuster of Piranha 3-D.

In 2009, six friends arrive at an isolated cabin to enjoy a long weekend in the snow. An epic snowstorm interrupts their vacation, trapping them on the mountain and resurrecting the haunting ghosts of the Donner Party. But, are they true 'entities' or is it simply 'cabin fever' that brings out their fears and darkness, causing friends to turn against each other as reality deteriorates around them.

There's a crisis in the Florida Everglades as giant pythons are threatening the alligator population.