Welcome to the forums, redddevil! The screenshot appears to be the Dos version of ONML. Is that correct? I grew up with this version, and I have never ever encountered this problem. Just like namida said, the only thing I can think of is that the 4 lemmings must had died in some way, probably from splatting or from getting eaten by the lizard. I think it's likely the latter, since even though it looks like it on the right side, you were still able to save that crowd and therefore it couldn't be from splatting. Here, did you bomb the first lemming that fell out of the left entrance? From what I can gather, it's impossible to die by falling off the bottom of the screen?