I have tried both the IOS/Android and Original CD versions and to be completely honest I like the newer version better. It brought in less creepier music, removed the "fun is infinite with Sega enterprises" screen and added one of the most boss characters to the Sonic franchise: METAL SONIC!! Other than that lets talk about the cons of the game. Metallic Madness act 2 insanely long, the final boss will have you rage as I got about 6 game over screen trying to finish it. Other than all of that I would recommend getting the game. (As in IOS/ Android, 360/ONE, PS3/PS4, PC.)