Hexen is the sequel to Heretic. Like Heretic, Hexen is a fantasy game based on an enhanced DOOM engine. All of Heretic's innovations like vertical looking, flying, and the inventory system have been carried over. The new major changes this time around are three characters for the player to choose from and the level hub system. The characters are the Fighter, the Cleric, and the Mage. Each one has four unique weapons and different levels of speed and armor.