Every single game requires art concept designs. Art is a major thing that all games are required to have to convey their ideas. Art is used to create environments, characters, buildings, and more. The art gets converted through code and 3D, depending if the game is gonna be 2D or 3D.
There are a lot of aspects of the process of game development and I’m leaning towards 2D character design. All I really draw is many types of characters from cartoons and also anime. What is needed for creating a character are a lot of things, but here is an example of a character design.

This is a character design of a enemy within the game God of War. Many drawings made to show all the aspects of a character. A character design should show a full image of the character and some additional images where it shows emotions and things that make them unique. For example: if a character has a robotic arm, it would be good to draw just the arm in the character design sheet.

The more detailed into the character’s design, the better. Ultimately, in the gaming industry, this will be sent from the art department to the technology department. They would look into the character design sheet and get to know how the character is. They will implement the character into the game via programming and coding.
To create one of these character reference sheets, start of with a world where the character would be in. Then you should focus on their personality and traits. That’ll help with gathering information that’ll be used to create ideas on what you would be thinking your character should look like. That idea is called referencing. You would be taking many images of people’s art and anything that can be used with the potential of being apart of your character, and mash them together to use as a reference.

This is one of my reference sheets for a character I’ve been working on. Mt character is apart of a medieval world who is a nice, strong, and cocky brawler. I can use this to create a bunch of sketches just for one character.
For each sketch of the character, it’s best to make different sketches. Find witch one you like best and get in more detail with it. As you keep drawing, you’ll soon be able to make a character with a good character design sheet that can be used in the gaming industry.