In manga, an omnibus edition is a volume release collecting multiple volumes or chapters which were originally released separately. Manga publishers release omnibus collections typically of older works, combining them in a bargain format and often collecting a particular story arc, although some omnibus releases cover an entire manga series.
In 2014, Shogakukan announced that they would be releasing a new omnibus edition of the Ruby & Sapphire chapter, in commemoration of the release of Pokémon Omega Ruby and Alpha Sapphire. The volumes will be released under Shogakukan's "My First Series" brand, which are bargain-priced volumes sold only in Japanese convenience stores. A total of four volumes were released, beginning with volume one on October 24, 2014.
Satoshi Yamamoto confirmed on his Twitter account that the new series of volumes has no connection to the 2011 releases and that the 2011 releases have been permanently discontinued.
In 2017, it was announced that a new omnibus edition of the Red, Green & Blue chapter would be released under the title "Pocket Monsters Special Paperback Edition Red, Green & Blue Chapter". A total of two volumes were released, beginning with volume one on July 4. These volumes were later released in English in Singapore by Shogakukan Asia under the title "Pokémon Adventures RGB".
Beginning in June 2014, European French publisher Kurokawa began releasing the Red, Green & Blue chapter and the Yellow chapter together as a series of three omnibus volumes. While the Red, Green & Blue chapter and the Yellow chapter had been previously released in France by publisher Glénat, these volumes feature a new translation. Kurokawa's omnibus volumes contain all the adventure route maps from the original Japanese volumes, but lack the character introduction pages from the beginning of the volumes.
On January 16, 2018, Kurokawa announced they will start publishing the Diamond & Pearl and Platinum chapters as a five volumes collection.
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In October 2015, Spanish publisher Norma Editorial announced they would be publishing the entirety of the Pokémon Adventures manga. Due to the length of the series (52 volumes at the time of announcing the license) and due to different story arcs often starting and ending partway through volumes, Norma Editorial has opted for an omnibus format, with 30 volumes expected so far. The volumes will have double numbering to accommodate fans who may wish to begin reading from a particular story arc. For example, the Yellow chapter, was published over two volumes, which were numbered as Yellow Volume 1 and Yellow Volume 2, and Volume 3 and Volume 4 of the series overall.