Not sure about landmines, but I did wonder whether you'd lose a sheep if you tipped it so the sheep ran into a wolf and got eaten...

A black sheep who always runs counter to the acceleromoter might be fun, too, for the advanced level. The first thing you have to work out is that when you tip the device down right, the sheep runs up the screen. Just one black sheep - bonus points if you get him penned.

The concept has load and loads of potential for extras... but can we try to get the basic idea first... then you can all add extra levels with your cats, black sheep, landmines, mint sauce etc.