Fist of the North Star: Ken's Rage
Hisashi Koinuma, the game's producer said that the staff aim to create a "new realistic feel" for the "Fist of the North Star" series while still being faithful to the original's roots. During this process, he mentioned his concerns for the characters' body structure, muscles, and other minute details (such as perfecting the model for Raoh's wrinkled forehead). He noted that the official mode for this title carries more action adventure tones than other "Warriors" titles thus far yet gave his assurance that "Warriors" fans can easily feel at home in the game's original story mode. He personally spoke his thoughts regarding the game at Yodobashi-Akiba, Biccamera Yurakucho, and Biccamera Ikebukuro on March 22 and March 25. He also played a rock-paper-scissor game for attendants, the winner of the crowd obtaining an original T-shirt signed by the game's voice actors.
Ristar
Some years later, the game starring that rabbit-type character was developed separately from Sonic, and eventually evolved into a prototype called "Feel". The rabbit resemblance in "Feel" was already lessened somewhat in the prototype, as the character no longer used his ears, but rather his arms. After some changes in the main character, and going through several names, that game eventually became what is now known as "Ristar". The name also went through further changes during development of the Western versions, going from "Ristar the Shooting Star" to "Dexstar", and finally to "Ristar".