London, Apr 17 (IANS): Actress Emily Blunt is in negotiations to join the cast of sci-fiction film "All You Need is Kill", opposite Tom Cruise.

Produced by Erwin Stoff, Tom Lassally and Jason Hoffs, "All You Need is Kill" follows the story of a soldier in a war against aliens. He is is forced to re-live his last day again and again after he is killed.

If Blunt joins the cast, she would play another soldier who fights alongside him, reports contactmusic.com.

The actress has previously said she was looking for a role in a sci-fiction or superhero film where the female character has substance.

"Usually the female parts in a superhero film feel thankless. She's the pill girlfriend while the guys are whizzing around saving the world," said Blunt.

"I didn't do the other ones because the part wasn't very good or the timing wasn't right, but I'm open to any kind of genre if the part is great and fun and different and a challenge in some way," she added.

She also wants to do other films, especially "a comic-book movie or a science-fiction film."