This is a tweak that you activate in winterboard.

It changes the iPhone game Super Jump World into Mario!

You need to open the folder named 'mario-sounds' then copy the sounds and then navigate to var/ mobile/ SuperJumpworld/ SuperJump.app then post the sounds in that folder and overwrite the stock app sounds. Now open winterboard and activate mario-super-jump-world and respring, and now have fun playing mario on your phone!

I would like to thank @ieFXx for helping with the sounds!