itch.io

An 8-bit handheld game console developed and manufactured by Nintendo. Now popular among home-brew creators and modern developers looking to capture a retro style

Pretty sure everything is indie on itch.io but just in case you want something extra indie.

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.