This is a movie based on fight for survival as the cast is stuck in other planet and attacked by strange species.
The performance of the actors are truly amazing, michael and katherine has lead their role with accuracy.
The music is also amazing and it suits the scene and it sounds thrilling also when accompanied by a attack scene.
The cinematography is also amazing and the users are given an actual experience of a alien fight movie and it is truly breathtaking.
I can only say this is one of the best movies based on aliens of this century.