Astral Lab is a chaos, evolution, horror, and comedy-type mod that adds a wide range of content and other things. It introduces Zombies from Level 0 to Level 6, along with different types of Husks and various kinds of Guards.
In this mod, Smart Zombies can open and close doors, do not burn in sunlight, and behave in unpredictable ways.
The main feature is evolution, which has two types: Basic Evolution and Rebirth Evolution.
In most cases, mobs evolve into stronger forms through Basic Evolution. However, Rebirth Evolution is rare and can cause a mob to become weaker instead of stronger.
Astral Lab focuses on chaos and evolution, where mobs constantly change and develop, creating intense and unpredictable gameplay and other things.