Bukkit

entities: ZOMBIE, SKELETON
worldnumber: 2
interval: 10 #Seconds
worlds:
  1: YourWorld
  2: Test

ARROW 
           An arrow projectile; may get stuck in the ground.
BAT 
            
BLAZE 
            
BOAT 
           A placed boat.
CAVE_SPIDER 
            
CHICKEN 
            
COMPLEX_PART 
            
COW 
            
CREEPER 
            
DROPPED_ITEM 
           An item resting on the ground.
EGG 
           A flying chicken egg.
ENDER_CRYSTAL 
            
ENDER_DRAGON 
            
ENDER_PEARL 
           A flying ender pearl.
ENDER_SIGNAL 
           An ender eye signal.
ENDERMAN 
            
EXPERIENCE_ORB 
           An experience orb.
FALLING_BLOCK 
           A block that is going to or is about to fall.
FIREBALL 
           A flying large fireball, as thrown by a Ghast for example.
FIREWORK 
            
FISHING_HOOK 
           A fishing line and bobber.
GHAST 
            
GIANT 
            
HORSE 
            
IRON_GOLEM 
            
ITEM_FRAME 
           An item frame on a wall.
LEASH_HITCH 
           A leash attached to a fencepost.
LIGHTNING 
           A bolt of lightning.
MAGMA_CUBE 
            
MINECART 
            
MINECART_CHEST 
            
MINECART_FURNACE 
            
MINECART_HOPPER 
            
MINECART_MOB_SPAWNER 
            
MINECART_TNT 
            
MUSHROOM_COW 
            
OCELOT 
            
PAINTING 
           A painting on a wall.
PIG 
            
PIG_ZOMBIE 
            
PLAYER 
            
PRIMED_TNT 
           Primed TNT that is about to explode.
SHEEP 
            
SILVERFISH 
            
SKELETON 
            
SLIME 
            
SMALL_FIREBALL 
           A flying small fireball, such as thrown by a Blaze or player.
SNOWBALL 
           A flying snowball.
SNOWMAN 
            
SPIDER 
            
SPLASH_POTION 
           A flying splash potion.
SQUID 
            
THROWN_EXP_BOTTLE 
           A flying experience bottle.
UNKNOWN 
           An unknown entity without an Entity Class
VILLAGER 
            
WEATHER 
            
WITCH 
            
WITHER 
            
WITHER_SKULL 
           A flying wither skull projectile.
WOLF 
            
ZOMBIE