Pixel Art Types

Pixel art can be divided into different types based on common topic, settings of the art.

According to the size of lines one can differ pixel art: By the number of colors there are: According to the canvas size:
 * Single-pixel art (outline width is 1 pixel)
 * Two-pixel art (outline width is 2 pixels)
 * Three-pixel art (outline width is 3 pixels), etc.
 * 4-bit arts (8 colors)
 * 8-bit arts (16 colors)
 * 16-bit arts (32 colors), etc.
 * 16x16 pixels (the most popular)
 * 32x32 pixels
 * 64x64, etc.

Also canvas could and have different lateral length, not necessary square.