Block

Blocks are the basic units of structure in Minecraft that make up the game's world. Many blocks can be collected and placed anywhere in the game's world, as well as be used as helpful resources.¹

Behavior

Blocks are arranged in a 3-dimensional grid of 1-cubic-meter cells, although some blocks appear to occupy a partial cell; these include slabs, snow layers, ladders, vines, stairs, turtle eggs, sea pickles, and others.

Together, blocks and fluids build up the in-game environment, and most can be harvested and utilized in various fashions. Some blocks, such as dirt and sandstone, are opaque and occupy their entire cubic meter, while other blocks, such as glass and flowers, are transparent or non-solid. Explosions destroy some blocks more easily than they destroy others. Some blocks are completely immune to explosions.

Air is a special block. It is an unbreakable transparent block, as a substitute for the absence of blocks. It has two variants: cave air and void air‌.

Some blocks, such as sea lantern and glowstone, emit light. The amount of light they emit varies widely; see this table of light values for further information. Opaque blocks completely block light, while transparent blocks can have no effect on light, block the light, or merely weaken it.

Almost all blocks ignore gravity, except for sand, red sand, gravel, anvils of all damage levels, dragon eggs, all colors of concrete powder, scaffolding, pointed dripstone, and suspicious sand and gravel, all of which turn into entities when their support is removed.¹

List of blocks

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1. Source: Minecraft Wiki. ↩↩