Sega announced a Sonic the Hedgehog collaboration in Phantasy Star Online 2 New Genesis for his 34th anniversary.The collaboration features a Sonic Style Heroines AC Scratch Ticket, Special Training quests with Sonic and Shadow, and a Sonic Collab SP Scratch.New cosmetic items like Sonic, Shadow, and Tails outfits debuted on June 4, 2025, along with themed emotes and decorations in Central City.Additionally, a Sonic Collab: Suits/C-Space Pack costing $9.99 will be available from June 6, 2025, offering various in-game items and decorations.