In my game (you can see it here) when I kill a zombie It turns into a blood splatter and sometimes another zombie walks over the blood splatter and it appears that it is under the blood splatter. What I would like to do is when zombie is killed have it be the lowest depth. It can't swap depths with the lowest one because as soon as the next zombie is killed it will swap depths and the first one won't be below all of them anymore. That's kind of confusing, but if you look at it via the link above you'll see what I mean.
Just kill a zombie and wait for another zombie to walk over the blood splatter. Sometimes the other zombie will be above it and sometimes it won't.
The ship will follow the mouse
Click anywhere and hold to activate the giant saw blade of death
Also, if you have any comments on what I have so far they're more then welcome!