A sequel to
Space Channel 5 was planned from an early stage, but production was put on hold until Western sales figures came in. Despite these low sales, it was much easier for
Tetsuya Mizuguchi to pitch the sequel to Sega as they were now familiar with the genre and gameplay. As with the first game, production was handled by Sega's subsidiary studio
United Game Artists. Production lasted around two years. Returning staff included Mizuguchi as producer, original art director Yumiko Miyabe as director, lead designer and writer Takumi Yoshinaga, and artist Mayumi Moro as art director. During its development, the team knew Sega's console production days would end with the Dreamcast. While the original game was developed first for Dreamcast and production was focused on this version,
Part 2 saw simultaneous development for Dreamcast and PS2 and was the second game developed by the team for Sony's console.
Space Channel 5: Part 2 was the last title developed by United Game Artists prior to Sega's internal restructuring in 2003, when it was incorporated into the newly formed
Sonic Team studio. It was also Mizuguchi's last game at Sega prior to leaving following the restructure and founding
Q Entertainment. The original atmosphere, described as "retro sci-fi", was retained for the sequel. Several early planned elements, such as a censorship group which would interrupt broadcasts they deemed unsuitable and the main villain being a galaxy-conquering alien force, were cut from the game as they made the plot overly large and complicated. Ulala's outfit saw a color change from its original orange to white. While the first game used polygonal real-time models over FMV sequences, the environments in
Part 2 were fully 3D. There were several given reasons for this; the team were more familiar with the Dreamcast hardware and so were able to create 3D environments, they wanted to shift away from the pre-rendered style of
Space Channel 5 which Mizuguchi described as "really tough" to create, and they wanted to create a more cinematic experience for players. Based on feedback from the first game, the team added more extras such as alternate costumes and accessories. A notable new element to gameplay was the instrument-based battles, which proved difficult for the developers to fine-tune. To ensure creative control over the voice performances and foreseeing last-minute changes, the game's staff voiced the characters as with the first game. The voice actors performed their lines alongside the musical tracks to get the timing right. The process was handled by the game's sound team and overseen by Mizuguchi. The game featured an appearance from
Michael Jackson, who played himself as a character called Space Michael and is voiced only in English across both the Japanese and English voices. Having previously appeared in the first game as a brief cameo after being impressed by a pre-release version, he was given a much-expanded role in the sequel. The first game's director, Takashi Yuda, returned to voice the character Fuze; as did Ulala's respective actresses in Japanese (United Game Artists staff member Mineko Okamura) and English (
Apollo Smile).
Music The music for
Part 2 was co-composed by Naofumi Hataya, Kenichi Tokoi,
Tomoya Ohtani and Mariko Nanba. Hataya and Tokoi returned from the first game, with Hataya also acting as sound producer. The game was Ohtani's third project as a composer after his work on
Sonic Adventure 2 and
ChuChu Rocket!. Nanba was brought aboard the project in May 2001, and was initially overwhelmed by both the project and the game's musical style. Same as with the first game, the music was influenced by big band jazz of the 1960s and 70s. Production of the music lasted an entire year due to its core part in the gameplay, and the multiple adjustments. It proved so turbulent at times that Hataya was off sick for a week with stomach troubles, and there were several periods of overtime. The main theme was "Mexican Flyer", composed by
Ken Woodman in 1966, returning from the first game. The lyrics for the songs were written by Yoshinaga. For battles, rival characters were given different instruments. The first rhythm battle created was against rival reporter Pudding, who uses a guitar. Earlier concepts were planned for a percussion opening, having a faster tempo than the released version; Hataya and Yoshinaga collaborated on the track for a long time. The percussion was moved to a different boss character called Pine. The ending theme "This is my Happiness" was composed by Hataya, who was given the direction by Mizuguchi for a low-key theme about happiness. The lyrics were written in English by Tomoko Sasaki. The soundtrack saw multiple album releases; two of the originals had three of the six reports, additionally from tracks from Ulala's Dance mode with vocals. The songs retained their lyrics for the album release, although they would have given musical elements. The two albums, respectively titled
Chu!! and
Hey!!, were published on April 10 and 24, 2002 by
Marvelous Entertainment and distributed by
VAP. Two remix albums were also released, featuring both arrangements of tracks from
Part 2 and short audio dramas;
Uki Uki Non-Stop Mega Mix on June 21 and ''Moji Moji Can't Stop Remix
on June 24. Tracks from Part 2
were included in the compilation album Space Channel 5 20th Anniversary: Gyungyun Selection'' by UMA on December 18, 2019. ==Release==