A fun little entry that ties in very well with the theme.
Deciding whether a civilian or a goblin would reach the gate first was definitely the best part, as it tested your prediction skills. The premise is exceedingly simple, but it succeeds at what it is trying to do.
I do wish there were some kind of animation the creatures played when they were zapped, though. And an indicator of how many had gotten through the gate. Just a way to make the creatures feel more like living threats as opposed to just forward moving images. Of course, I recognize that with time constraints not always can such a thing be achieved.
Thanks for creating!