Btooom! manga reaches its end, as revealed by its creator Junya Inoue on his official Twitter account. In particular, he said that the manga’s serialization will end soon and the 26th volume will be the final one.

In March 2014, Shinchosha's Monthly Comic @Bunch magazine reported that the manga would enter its last arc in the April issue.

Inoue launched Btooom! in 2009 in Weekly Comic Bunch, while in 2011 it transferred to Monthly Comic @Bunch. The manga has inspired a 12-episode anime released in 2012, while a multiplayer smartphone game was launched last February.

Source: animenewsnetwork.com