Cute looking game. Anyone wanna give some input on length?

I'm currently enjoying Momonga Pinball Adventures, with one exception... The flippers are currently mapped to the left and right arrow keys, and with my adult, human-sized hands, it makes controlling the game rather difficult. Most pinball simulators have the flippers mapped to the left and right Shift keys. if the game were either configured in this fashion, or the user allowed to customize the key mapping, it would make a huge difference....

I would like to back it up since there is no cloud option.

Anyone found the secret room on city of xio- level? I must have played it 50 times now, no clue where it might be. Any hints?

This game seems to be nice and funny, but is the camera allways locked on the ball ? I can't watch it for more than 5 seconds before my old eyes get jinxed. I think it won't be a good idea for me to buy it if the answer is yes :/ (i usually play 1920*1080 on a 24" screen)...