In search of the missing Chaos Emeralds, Sonic becomes stranded on an ancient island teeming with unusual creatures. Accelerate to new heights and explore vast open zones as you race across the massive Starfall Islands! Battle hordes of powerful enemies with an all-new combat system, uncover the island's mysteries, and save Sonic’s friends. The Sonic Frontiers – Definitive Edition includes: • Sonic Frontiers game • "The Final Horizon" story campaign • "Sights, Sounds, and Speed" and "Sonic's Birthday Bash" Content Updates • Bonus in-game items (Explorer's Treasure Box, "Monster Hunter" Collaboration Pack, "Sonic Adventure 2" Shoes, and Holiday Cheer Suit) • Digital Art Book and Mini Soundtrack *Please note that the content of “Explorer's Treasure Box” can only be validated when you start a New Game.