32 pixels by 32 pixels is a common resolution for assets matching a low-res pixel art aesthetic. Although the assets may not be specifically 32x32, they are designed to work in a graphical setting where objects are around that size.
Simple, fast-paced games with colorful graphics and catchy audio, that require few or no explanations, can be played in short bursts, and usually require a lot of skill. Similar in style and spirit with the arcade game cabinets of the 80s and 90s.
Pixel Art refers to the charming, simplistic, retro/renaissance style of very-low-resolution graphics, such as from the 1977-1995 Atari, GameBoy, & Super Nintendo (SNES) eras.
