Blockland has several different types of bricks
This is a type of smaller sized bricks, based off of actual Lego bricks.
This is a type of very small, flat bricks. Each plate is 1/3rd the size of a regular 1x1 brick.
This is a type of brick that is round. They are used for things like arches, barrels, or even spheres. They can either be Bricks, or Plates, depending on their intended use.
Ramps are a type of angled brick, with a textured print on the angled portion. They are one of the most important types of brick in a detailed build. Ramps are Bricks, a Plate ramp has never been created.
Baseplates are extremely large bricks, used for large objects or ambiguous background objects.
Although there is no actual category called "Custom", if a player creates a brick or brick pack, they can create a new category to place bricks under.