mobile phone games

Here's something stupid. I've got one of those silly platform games on my mobile phone ("bounce") which has, for the last six months or so, proved my most vexing intellectual sparring partner. About a month or so ago I finally completed the bloody thing, but the progress of trying and trying and trying to make that little red ball bounce over the pillar but not into the path of the scary spider clearly rendered me an addict, meaning that the last month or so has seen me forlornly breezing through the game repeatedly at bus stops and train platforms, wishing I could re-create the thrill of doing it when I couldn't get anywhere.

Having finally got to the stage where I can now complete the whole thing in a matter of minutes, and suffering withdrawal symptoms, I had the idea of trying to play it with my phone upside down. Okay, I know - it was a long train journey home and I'd finished my book. Anyway, turns out it's not so hard when you get used to it, and I'm once more racing through the levels, albeit with a slightly higher stupid mistake ratio. One thing that really surprised me, though, is that considering every object on screen is spherical, square or expressionless - and thus the game looks broadly the same from whatever angle - I find playing it upside down extremely disorientating, as if it is me that is hanging upside down or walking on the ceiling or something. I can practically feel my ears popping. Strange. Anyone else tried this? Same feeling?

I'm gonna have to buy a new phone or something.