5 blast from the pastanimeheadbanger | 27/11/2011 | See all animeheadbanger's reviews (2)The game to celebrate sonics 20th anniversary is in many words astonoshing. not only do you get the 3d sonic (sonic the hedghog , sonic unleashed). Also the loveable 2d sonic from the classic sonic games of the 90s.The gameplay is some gameplay mechanics ive seen in a sonic game ive seen in many years. during gameplay you can switch between classic and new sonic to get different aspects of gameplay. playingthrough green hill zone as 2d sonic brings back memory of childhood, the music to the green hill zone still being there and colours been so crisp which makes the gameplay so much better. playing through the old sega megadrive levels 3d sonic brings the classic sonic levels back to life in all new 3d. This game is a must have for all sonic fans new and old a must buy.