Right side inventory

• Quick use of items
• Use mouse wheel to change selected item
• Selected item (tools) can change time of block's destruction
• Selected item (torch) can make light around player
• Selected item can be dropped
• Selected item (blocks) can be placed

Top right icons

• Lighting - symbolize energy that can convert into running
• Bubble - symbolize breathable air - is declining into water and in the space
• Water drop - symbolize drinking (right mouse click into water can regenerate it, or using water bottles)
• Meat and vegetable - symbolize eating of player
• Heart - symbolize health of player - low meat or water declining health, but if you have enough of food and drink, than it regenerates.

Player in the centre

• Player is wearing clothes
• Hand is moving towards mouse
• you can destroy or place item just to a certain distance. I think that blocks further to player are destroying slower

Terrain

• Terrain is formed by 16×16 blocks (In the setting zoom 1× means 16 pixels per block (width), 2× means 32pixel per block, ...)

Terrain layers

• Terrain is formed by five layers
• Each block has assigned a layer
• Two blocks from same layer cannot be in same position in one layer
• if you have solid block than you can have in some position top and back block (dirt or leaves on the wood)

Layers

• Background blocks (eg. Wood, stone backgrounds, …)
• Solid blocks (eg. dirt, stone, sand, …)
• Top blocks (eg. leaves, grass, machines, some flowers, …)
• Mob layer (chicken, rabbit, parrot, fish)
• Special plants layer for special growing plants, it can be included into top layer (eg. flax, strawberry, raspberry, blueberry, wheat, … )

Sunlight and shadows

• Sunlight is defined like long vertical sunbeam from somewhere up down to first solid block
• Shadows are between first top block (eg. leaves) from top to first solid block (eg. dirt with grass)