Next game idea

Ok, heres the next idea. Highest heart seems to be working very well and the prototype is well received. But it looks like it can't be a project that will be finished in a small timeframe of 3-4 months. So this time i wanted to narrow a mechanic a bit more down to make something simpler.

Hollow planet is the story of a small cartographer that jumps into holes to find out where they lead. these holes go straight through the small planet he lives in. The player has to use the iphone to change gravity so no harm comes to him.

I want to make a game here that will have you turn your iphone even more than 360 degrees sometimes o you constantly have to readjust your grip.

Heres the concept poster