Computer game graphics

1 pixel art 

Pixel art is a form of digital art where images are made and edited at pixel level using a graphics editing software it can make the image look dotted. What defines pixel art is its unique visual style where individual pixels serve as building block its like making a picture out of Lego. A pixel is a small part of a picture added up with other parts to form an image the more pixels the clearer and sharper the image the less pixels the worse the image.

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2 concept

 art concept art is a form of illustration used to convey an idea for use in films, video games, animation, comic books, or other media before it is put into the final product. Concept art is developed in many stages where they further develop the image. The main goal of concept art is to convey a visual representation of a design, idea, and/or mood for use in films.

3 texture art 
Texture art is when you use colours and other types or art like photo realism to for example make a wall look like its made out of bricks or colour something a greyish silver to make it look like a metal it can imply the feel of something in real life.

4 background graphics
Background graphics is the part of the scene or picture that is the most far away from the viewer like a wall in the background or the sky line even a surface or a colour that is behind something.