From 9 October to 1 November 2026, Ikebukuro PARCO in Tokyo will hold the paperwork behind Sonic the Hedgehog, some of it never shown in public before. The show is called SONIC the Exhibition -ACROSS GENERATIONS-, it’s for the series’ 35th anniversary, and Sega is one of the four organisers.
What’s on the walls
The exhibition is split into five areas: games, characters, design, music and art. The development material includes scripts, setting documents and character documents, and PARCO’s own listing says some of it is being shown to the public for the first time. Which games they come from isn’t spelled out.
Sixteen artists, including Yusuke Nakamura and Taku Inoue, have made new pieces for the show, and some are for sale.
Tickets and the lottery
Admission is ¥1,500. Children below elementary school age get in free. Doors are 11:00 to 21:00, with last entry at 20:30. The final day closes at 18:00. Tickets for 9 to 11 October are sold by lottery, with applications open until 23:59 on 4 October through eplus.jp. The sources I read don’t say how later dates are sold.
Sonic himself turns up for greetings on 17, 18, 24 and 25 October, with times still to be announced.
The ¥1,000,000 hedgehog
The merchandise runs from trading pins and T-shirts up to a Sonic Arita porcelain piece called Infinite Blue, made with YOYOYO. Five units are for sale at the venue at a price of ¥1,000,000.
I’d take the scripts over the porcelain. Wikipedia’s entry on the 1991 game says it began with just Naoto Ohshima and Yuji Naka and ended up with a team of seven at Sega R&D9. That leaves a small paper trail. Publishers rarely hang theirs on a wall. The open question is which games the documents come from. If it’s all the modern ones, the 1991 original is getting a thin deal.
