'Game King R') is a Japanese manga series written by Akira Itō, based on Kazuki Takahashi's Yu-Gi-Oh!

The series, which is a spin-off to the original manga, was serialized in Shueisha's V Jump magazine between April 2004 and December 2007, with its chapters collected in five tankōbon volumes.

Yu-Gi-Oh R takes place following Yugi Mutou's victory in the Battle City tournament.

After taking over KaibaCorp while Seto Kaiba is in the United States, Tenma kidnaps Anzu Mazaki, prompting Yugi and his friend Katsuya Jonouchi to face Tenma's RA Project and the duel professors.

Written and illustrated by Akira Itō, under supervision by Kazuki Takahashi, Yu-Gi-Oh!