After a taking some time to learn Unity I have managed to rebuild Marbelous as a brand new app that is now compatible with Windows 8 and Windows Phone 8.1.
These is a slight alteration – I have removed the gyro controls from the gravity game and replaced them with buttons to rotate the controls. On the desktop you can also control the rotation with the arrow keys, as well as use the Space Bar to activate / deactivate the power-up button.
Its still free to play so you have no excuses not to go and check it out on the relevant stores
and of course you can still play it on iOS and Android