Sonic Unleashed - This important 3D title changed the Sonic formula for years to come.It still holds up as an important part of the series even ten years later. Sonic Generations - A unique game made to celebrate Sonic's 20th anniversary that features both Modern and Classic Sonic play styles across many different levels from previous releases.Sonic Adventure & Sonic Adventure 2 - Sonic's first proper foray into 3D, and arguably one of the series' most fondly remembered titles, these are commonly considered must-plays.All four first mainline games can be purchased as a set in Sonic Origins together, completely remastered. Sonic 2, Sonic 3 & Knuckles- Considered to be the best of the original 2D Classic Sonic titles, these two have aged considerably well compared to the first game.
