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Set in a fictional universe, often (but not always) with fantastic or supernatural elements, alternate worlds, magic and monsters.

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.

Bones and stuff

Sprites are generally 2D images used in games to represent objects. They can be animated or static, and come in different styles like isometric or top-down.