Sonic Adventure: Iizuka and Senoue on the tough 3D development
Takashi Iizuka and Jun Senoue looked back on Sonic Adventure in Japan and called the Dreamcast game exceptionally difficult to make.
Jun Senoue says development began in 1997. According to him, six storylines, the Chao and Chao Garden, field music, and voice acting made the project especially complex.
Iizuka says Sonic Adventure made the biggest impression on him, but that he also remembers the production as very difficult. In the same retrospective, he says Sonic Adventure 2 was more pleasant to develop than the first game.
What happened
In an interview with Japan’s Continue magazine, Sonic Team members looked back on Sonic Adventure. The conversations with Takashi Iizuka, Kazuyuki Hoshino, and Jun Senoue focused on the game’s production as part of Sonic the Hedgehog’s 35th anniversary. The source therefore places the discussion firmly in a birthday retrospective, not in the lead-up to a new release or remaster.
The provided source describes Sonic Adventure as possibly the hardest game in the Sonic series to make. Iizuka says the game made the biggest impression on him, but that he also remembers development as very tough. He also says Sonic Adventure 2 was more pleasant to develop than the first game. That makes the difference between the two Dreamcast-era projects explicit, as described by one of the people involved.
Senoue says development of Sonic Adventure began in 1997. He points to six character stories, the Chao and Chao Garden, field music, and voice acting as elements that made the work complicated. In the quoted material provided, Iizuka also says the team only realized during production how hard it would be to bring Sonic into 3D, although that quote is not fully visible in the source. The available information shows that the move to 3D was not just a technical challenge, but also a heavy production and content challenge.
The source names Kazuyuki Hoshino as one of the interviewees, but the supplied summary does not include separate quotes from him. As a result, this retrospective mainly centers on comments from Iizuka and Senoue. The core takeaway is that Sonic Adventure is remembered within Sonic Team as a project with multiple parallel systems and storylines, which made development significantly harder than later entries.
Timeline
1997 — According to Jun Senoue, development of Sonic Adventure begins.
During development — Sonic Team works on six character stories, the Chao and Chao Garden, field music, and voice acting, which Senoue says made the project complex.
During development — Iizuka says the team only gradually realized how difficult it would be to bring Sonic into 3D.
After Sonic Adventure’s release — Iizuka looks back on the game as the title that made the biggest impression on him, but also as a very difficult development.
Later — Iizuka says Sonic Adventure 2 was more pleasant to develop than Sonic Adventure.
2026-10-06 — The Sonic Adventure retrospective appears in the context of Sonic the Hedgehog’s 35th anniversary.
2026-10-06 — Kotaku publishes a summary of comments from Iizuka, Hoshino, and Senoue.
Background
Sonic Adventure was one of Sonic Team’s first major 3D games for Sega. The retrospective in Continue magazine is not about a new release or remaster, but about the game’s production history and Sonic’s move into 3D. That makes the interview especially relevant as a historical look at how one of Sega’s best-known mascots made the jump to a three-dimensional presentation.
The provided information shows that development involved several systems at once. Senoue mentions six character stories, which suggests the game was not built around a single linear route but around multiple perspectives and play styles. The Chao and Chao Garden are also called out separately, along with field music and voice acting. That mix of narrative, music, and systems work helps explain why the production is remembered as exceptionally difficult.
The source also makes clear that the retrospective comes from an interview tied to Sonic the Hedgehog’s 35th anniversary. That anniversary provides the reason for looking back at older Sonic projects and places Sonic Adventure within a broader franchise history. In that context, it matters that Iizuka describes Sonic Adventure 2 as more pleasant to develop, because it gives a direct comparison between two consecutive 3D projects in the same series.
Because the supplied Iizuka quote cuts off, the exact wording of his comment about the move to 3D remains incomplete. What is clear is that he explicitly points to the difficulty of that transition and links it to Sonic Adventure’s production. The available facts therefore support a historical reading: Sonic Adventure was important not only as an early 3D Sonic game, but also as a project that was internally seen as especially demanding.
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Sources
- Kotaku: interview summary on the development of Sonic Adventure and comments from Takashi Iizuka, Kazuyuki Hoshino, and Jun Senoue.