Laughably bad sci-fi/horror flick about an alien monster from Mars who gets aboard a human spaceship traveling back to Earth. It's basically a guy in a rubber monster suit menacing the crew for 60 minutes. Good thing they brought along a crate of grenades and a rocket launcher and they're not afraid to use them inside their cramped ship! Very goofy.

it was pretty entertaining in the way that something ridiculously cheesy can be. there are no great leaps in film making here, in fact, it's pretty much all below par, but i'm not going to do any complaining about them placing a grenade in every square inch of a space ship to kill the fake looking alien because it has a degree of charming ineptitude.

I liked this movie mostly for its naïveté. Its crew apparently thinks nothing of smoking and using bullets, bazookas, poison gas, and grenades in a paper-thin aluminum can in space. The exterior scene displays an abject lack of understanding of gravity, and the creature's eventual downfall resulted from a massive plot hole. The film also has disappointingly little of the Raygun Gothic style that allows any of these movies to age remotely well at all and a strikingly mean-spirited romance.

Low-budget but atmospheric.

The movie "Alien" was based on(?)

Passes the time.