3D Minecraft Skyscraper City

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.
• Survival
In this mode, the player has a health bar which is depleted by attacks from monsters, falls, or environmental damage, such as drowning or falling into lava. The player also has a hunger bar, which must be periodically refilled by eating various food (porkchops, bread, etc.) in-game. Armor can help mitigate damage from mob attacks, while weapons can be used to kill enemies and other animals. Health replenishes when the player has a full hunger bar or by playing on the easiest difficulty, where the health bar regenerates by itself. Upon dying, items in the player's inventory are dropped and the player is respawned at current spawn point, which by default is where the player started, but can be set by sleeping in in-game beds. The items can be recovered if reached before they despawn.