[cuechan]

When you put Smartphone upside down, the ball will fall up

[bee_rider]

I wonder what could be done with a Super Mario Maker style community of people who make obscenely difficult maps. I guess maps where you have to hover the ball by rapidly flipping the phone would be just the start.

[2dvisio]

Came here to say the same. Also one can combine that with extreme tilts to accelerate massively and win easily