Just felt like it

Battle for Dream Island: Official Character Guide is an American children's book published by Scholastic in 2019 and is BFDI's first published book. It was first discovered in Scholastic's book flyers in the end of August to the beginning of September 2019, and was officially confirmed by Michael Huang[1] and Satomi Hinatsu[2] on the same day. The book was written by Satomi, Cary Huang, and a Scholastic employee. It is currently not available outside of the United States and is only available in English and Spanish.

Battle for BFB and Battle for BFDI (BFB) are two segments that make up the fourth season of the Battle for Dream Island series and the successor to the third season IDFB. ... The prize used to be a BFDI, but in "The Escape from Four", Four upgraded it to a BFB to keep contestants competing.