1: Zombies can all break through doors.
2: Zombies and Skeletons have their respective heads, thus do not burn in the day time.
3: Spiders will immediately be replaced by Cave Spiders of the same strength.
4: Ghast Fireball's explosions will be *5 as large.
5: Rabbits are all Killer Rabbits
6: Skeletons, when approached by foot, will switch to an iron sword when the player is close, and back to a bow when the player goes away.
7: Creepers do not spawn.
8: Endermen now will carry TNT, and explode when you are near them.
9: Zombie Pigmen are always aggressive.
10: All hostile mobs have roughly double attack damage, health, and follow range.