Mega Creeper


 
This addon gives the creeper an entire new (badass) look and also a couple of new abilities. Some of the features include the ability to shoot fire charges, punch players and also cause a much larger explosion. The first time I saw it in action it was hard to hold back my laughter!
 
Download here!

Spider Queen Boss


 
Are you afraid of spiders? Get this addon and fight your fear (quite literally)! This addon adds a spider queen to the game which is basically 10 times larger than a normal spider and also a whole lot more dangerous as it is always hostile no matter whether it’s day or night. Normal spiders still exist so this doesn’t replace any of the current mobs in the game.
 
Download here!

Zombie Apocalypse


 
Zombie Apocalypse is an add-on which makes survival mode much more difficult. Hostile mobs such as zombies are both stronger and faster and they are no longer affected by the sunlight. This means that you can run into zombies any time during the day. Humans, villagers, animals – none of you are safe in this world. Watch out! Zombies are out there to eat you!
 
Download here!