Global Champion
Global Champion is a modified USA version of Kaiser Knuckle, the Japanese and European versions. Global Champion has the "Recycle It, Don't Trash It!" screen, the "super moves" were cut, and the portraits of Kazuya, Liza and Lihua were re-drawn. After players choose their characters and their first opponents, they will then be able to see an intro sequence that shows the prologue of their chosen character's own personal story. The title screen is also different as well, but strangely, the letter "K" from both words in the Kaiser Knuckle logo can still be seen in some of Global Champion's backgrounds.
Dan-Ku-Ga
An updated version of Kaiser Knuckle was planned to be released in December 1994 as Dan-Ku-Ga (断仇牙), but it was later discontinued; however, the prototype itself was dumped onto the Internet as a ROM and was later included with Taito Egret II Mini console released in 2022.[3] This version allows the first two bosses, Gonzales and Azteca, to become playable characters. Players can no longer choose their first opponent in a one-player game, except on the Training difficulty level.
Other differences are the CPU AI being altered; players choose the difficulty level (Normal, Professional or Training) before their game; players can backdash with all characters; Gonzales becomes the 5th opponent, Azteca becomes the 9th and the doppelgänger of the selected character becomes the 10th; Kazuya, Lihua and Liza have been redesigned on the character select screen; all characters each have a third costume color; some of the basic attacks that are executed with two punch or kick buttons were taken out, but the rest are still present, being executed with a single button plus a joystick direction; finally, the third boss, General, can now be fought against without meeting certain conditions.
Additionally, Kaiser Knuckle 2 (カイザーナックル2) was also planned as a sequel to the original arcade board, intending to make the full transition to 3D, but the planning board itself was later canceled. The entire project would soon be retitled as Psychic Force, replacing the old models with new ones.[citation needed]