Experience the ultimate celebration of Sonic's 25th anniversary with , a high-speed 2D platformer that brings the classic pixel-perfect action of the 90s into the modern era. Originally released for PC on August 29, 2017, this "return to form" was developed by a team of dedicated fans and indie creators—Christian Whitehead, Headcannon, and PagodaWest Games—in collaboration with SEGA. Core Gameplay & Features Go to product viewer dialog for this item. Sonic Mania