There are Si-fic movies that have lengthy explanation for how things work and all technical detales. There are Si-fi movies that try to create its own world throughout the movie, which is limited to only 2hrs. The most great si-fi, including Star Wars, Aliens, don't try to explain to much or set rules for that world. Those things, we can get from books. That's what novels are for. Starship Troopers is a great si-fi movie, not because it creates its own world, with lengthy history and explanation for tecnological pregress. It's good, because its simply good for the eyes. FOR YOUR EYES only. Visually, it achieves the level of Star Wars and Alien series. Story is simple and not too much of complications. but, I still enjoyed it, because it most accurately portrays my imagination of what the future would be like. This movie is simply great. Get ready to visually stunned. DVD has alot of extra features. Great buy.