Alien Lockdown is undoubtedly the weakest of the six Alien movies. It derives most of it's plot lines from the second movie, Aliens. Only it's way off on the thrill-and-scare factor. The effects are pretty cheap too with lots of CGI mini-aliens running around, while momma-alien plods around without any of the intensity or viciousness of previous aliens. As for the humans, well it's lots of big boofheaded soldiers running around with guns that don't seem to be able to kill anything. Suffice to say if you've seen the second film, there's not much point watching this one. And to all the wannabe directors out there , there's not much point making any further Alien sequels.