Features:

• Zombies can place and destroy blocks, wich depends on wich tool the zombie is holding.
• Zombies can swim.
• Rotten zombies can throw rotten flesh at you.
• Zombies can sprint.
• Zombies can jump over 2 block or below gaps.
• Rotten zombies will slowly backup if the player is close.
• Customizable settings in a custom GUI, type /trigger Give_Gui to use the GUI menu.
• Zombies can jump up and bite you.
• Zombies run away from TNT.
• Zombies replace most hostile mobs, and some neutral mobs, wich is customizable in settings.
• Zombies can carry TNT.
• Cave traders, to make caves more enjoyable.
• And more!