It is a Yakuza-controlled casino, named after the co-leader of the Yakuza, Kenji Kasen. From here, Claude receives missions from Kenji in Grand Theft Auto III. There are rumors that the police have an investment in the casino, but this was never proved to be true. The business replaced the Big Shot Casino sometime between 1998 and 2001. Despite being a prominent building in Grand Theft Auto III, it is inaccessible, however, there is a hidden package on the rooftop helipad. In several pre-mission cutscenes, a garden area is seen on a roof of the casino and can be reached with the Dodo. One part of the garden is not solid which will cause the player to fall through the floor into the building space.
In Grand Theft Auto Advance, Kenji's Casino advertising can be found around Hepburn Heights and Red Light in Portland. However, the casino building in Torrington was called Pachinko World, one year before the events of GTA III.