Currently available on 2 streaming services.

Btooom! - watch online: streaming, buy or rent

Currently you are able to watch "Btooom!" streaming on Crunchyroll Amazon Channel or buy it as download on Amazon Video.

Cast

Suzuko Mimori
Himiko (voice)
Kanata Hongo
Ryota Sakamoto (voice)
Ken Narita
Masahito Date (voice)
Miyuki Sawashiro
Kousuke Kira (voice)
Yuichi Nakamura
Nobutaka Oda (voice)
Toru Okawa
Kiyoshi Taira (voice)