Hmmm... I don`t know... pacman and zombis? I would prefere cute little cartoon monsters instead of these giant human brain eating guys but okay.... it looks scary.
I think the zombis look waaay to "real" in contrast with the rest (pacman, his hammer etc.).
How about some sort of "vampire dots" (flyig yellow dots with teeth?) or something like this?

~Gurke *BRAAAAAAAAAAAINZZZZZZZZZZZZZZZ*