Titans - New Sub-Category
Adding titans, big creatures that roam the world of the Worldbox, each representing one aspect of the game, some can be passive or agressive, and what I had in mind was:
Fire: Dragon (Added)
Earth: Archelon (Passive Tortoise that passively roams through the world)
Skies: Pterodactyl (Neutral)
Water: Loch Ness Monster / Plesiosaur (Monster that drags units to the depths of the ocean to feast on, not always hungry)