For FiveM, "Zombie Apocalypse" maps are generally large-scale YMAP/MLO map packs
Instead of just spawning zombies, the map itself changes to reflect the collapse of society. fivem zombie apocalypse map
Good MLOs are optimized so the server doesn't "draw" the inside of a building unless a player is actually in it. Top Recommendations for Map Creators Instead of just spawning zombies, the map itself
Before diving into specific maps, it is essential to understand the anatomy of a great survival environment. Not every custom map works well with zombie AI. Here are the key elements: Instead of just spawning zombies