This is a genuinely good film despite the lack of star or director power. The effects aren't bad, the pacing is great and most importantly the film never takes itself or the subject seriously, which is what these films need to be. A confined space and flesh-eating zombies have been a staple of horror and science fiction ever since Romero's 1968 magnus opus but its films such as these that make sure the formula never gets old or cliched.