Btooom! is survival action series that was started as manga of same name, written and illustrated by Junya Inoue.
Ryouta Sakamoto is a gamer who wishes to work at a game company at some point in his future, but that seems impossible for him since he is currently unemployed. During his time as unemployed, he is best player in the world in game known as BTOOOM, the world's most popular multiplayer game. However this is not something his mother is happy with, and so the two of them would constantly fight about Ryouta's future.
One day when Ryouta opens his eyes, he finds himself somewhere in tropical island, with bag filled with mysterious objects. It was revealed later that Ryouta is in part of real life BTOOM! game where people would actually die, and all the people in the game were nominated by other people who wished them to die. The only way to get out of it is to use special bomb named BIM and kill seven other contestant.
Written by Buhssuht
For more trailers, see Fall 2012 trailer anthology blog.