3D Minecraft Skyscraper City

The game starts by placing the player on the surface of a huge procedurally generated game world. The player can walk across the terrain consisting of plains, mountains, caves, and various water bodies. The world is also divided into biomes ranging from deserts to snowfields. The in-game time system follows a day and night cycle. Throughout the course of the game the player encounters various non-human creatures, referred to as mobs. During the daytime, non-hostile animals spawn, which can be hunted for food and crafting materials. Hostile monsters, such as large spiders, skeletons, zombies and the dangerous exploding Creeper will spawn in unlit areas, such as in caves or during the night.
Complex systems can be built using the in-game physics engine with the use of primitive electrical circuits and logic gates. For example, a door can be opened or closed by pressing a connected button or stepping on a pressure plate. Similarly, larger and more complex systems can be produced, such as a working arithmetic logic unit – as used in CPUs.
The game world is procedurally generated as the player explores it. Although limits exist on vertical movement both up and down, Minecraft allows for an infinitely large game world to be generated on the horizontal plane, only running into technical problems when extremely distant locations are reached. The game achieves this by splitting the game world data into smaller sections, called "chunks", only created or loaded into memory when the player is nearby.