Two gigantic warring empires, one with the "thousand 36th level wizards," giant air-ships, and mummies, the other with mounted air brigade, gladiators, and massive legions. Weirdo Teutonic crusaders, vikings, aztec orcs living in a hidden city surrounded by molten lava, elvish and dwarvish civil wars, hobbit pirates, eccentric immortal French wizards, dog people, spider people, an invisible moon inhabited by cat samurai, the Hollow world, an immortal from Earth's future obsessively reconstructing a nuclear reactor...
You forgot the Scottish Liches! For Shame!