Edge of Tomorrow was a successful and fresh take on the sci-fi genre in film, but not many know about its origin as a light novel and then a manga in the form of the Japanese "All You Need Is Kill." This article could look at and compare the source material to its Western counterpart as well as discuss the changes done and what was gained and lost in translation.
Interesting, I read the manga because of the hype behind it, then the light novel, but didn't quite keep up since I'm not much of a movies guy. A quick wikipedia summary of the plot suggests to me though that the action is glorified and the psychological effects downplayed in the film, whereas it's clearly the reverse in the original sources. – Austin6 years ago