Vampirecraft

Well you can try it and if you find zombies and vampires you find out.

.....uh.....

I'm not going to lie this isn't that good of a mod. It would be awesome if the vampires were really different. Say, they regenerate their OWN health when they attack you, but only drain 2 hearts? Also, they have a max of 20. In daylight, they seek shelter in the darkness, and when there is a lack of, they explode (Though blocks aren't damaged). When it's day, in caves, and you're only 20 blocks below the surface, they take the form of bats and only change when attacked or threatened. Much lower then 20 and they'll always be Vampire form, but hide away from lava.