Zombie games can be fun or scary! What makes them interesting all derives in the way you structure your game. When making a zombie game in Fortnite, here are few things to consider when you start planning:
• Will your game be story driven?
• Will it be a survival themed map?
• What experience do you want your players to have when playing?
• Will you have boss fights or special battles?
So it all boils down to how you plan the game to be. Once you arrive at base to build upon, you can create interesting zombie game modes with unique experiences!