iopred: You need a Nuke button, I want to see them all explode at the same time! OH NO!
We'll see... if it doesn't affect performance then i'll definitely put that in.

dijiyd: So, how about some hints on how this is done, if you dont mind? Bitmap? As in one "tile" per pixel? (If so, wow, I wasn't sure flash could handle that many pixels (er.. as "walkable tile") at a time.)
I think Tony Pa's thread will explain this more clearly since this is where it all started:
http://flashkit.com/board/showthread.php?t=650493