Tile Sets or Sprite Sheets

As defined by Wikipedia:-

“A tile set (sometimes called a sprite sheet) is collection of smaller images called tiles (typically of uniform size) which have been combined into a single larger image. Tile sets are often used in 2D video games to create complex maps from reusable tiles within the set. When a tile set based map is displayed, the tiles that are stored within it are used to reassemble the map for display.”

You can download complete tilesets covering various well known games and themes, for example:-

videoGameSprites.net

Reiner’s Tilesets

Dragon quest

Or you can try searching for “sprite galleries”

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