Thank you so much. What exactly do you mean by different shapes? Do you refer to the outline always being a rectangle? tbh I haven't thought about other outline shapes so far, as I was thinking photos or maybe even videoclips for puzzling. However, I am intrigued and will give it a try with triangle and maybe hexagonal start images. Thanks for the inspiration.
By the way, the "handle leaving playarea" bug should be dealt with in the most recent update (10 mins ago) :)