"Generate a 3D model of a game arena floor for a mobile strategy game, in a stylized, slightly chunky art style similar to Clash Royale. The arena should be symmetrical with two main lanes for troops, divided by a central stylized river or chasm crossed by two simple stone bridges. The theme is 'Monster Clash,' so the ground could be ancient cracked stone tiles with subtle monster-themed carvings, or packed earth paths with patches of stylized, magical-looking flora. Ensure clear pathways and defined arena edges. The model should have a low to mid-poly look, suitable for mobile games. Output as FBX. Model only, basic placeholder textures are acceptable if generated.