Not sure if the mobile version's any good but I tried the Wii U demo and it's quite exciting - for someone who doesn't like racing games like Need for Speed.
It has a four star rating and is free so why not!!
Thanks to Trishool, the game's also free on Android. Link below:
https://play.google.com/store/apps/details?id=com.sega.sonic…
Note (Thanks to JV):
- iOS version is 1.05 GB and only works with iOS 7 or later.
- Android version is 789MB and works with Android 4.0 or later.
Size: 1.05 GB !!!