Btooom! is an anime which falls under the genres of Action. It also has 12 Episodes.
A 22 year old unemployed man named "Ryota Sakamoto" lives with his mother but is nothing special in the real world, but is one of the top players in a combat video game called Btooom! One day, Ryota wakes up on an island and realises thats his playing the real life version of the game.