Tutorials
If you compare 2D game art tutorials of years ago and modern ones, you can notice significant differences. Take a “Snake” game, for instance. Back in the day, the whole game was made of cubes. The background was green, and the snake was made of black cubes. Nowadays, the “Snake” game has hundreds of variations with different colors, background assets, and models. The snake is not a moving row of cubes but a detailed animal.