This is a paid asset, but now you can download CAVE TILESET TOP DOWN PIXEL ART for FREE, Please keep in mind this package is provided only for learning purposes or to be able to test before buying the product, NOT FOR COMMERCIAL PURPOSES.
Detail this asset from Unity Store: Original Link
CAVE TILESET TOP DOWN PIXEL ART v1.0
Embark on an underground adventure with our carefully crafted Cave Tileset Top Down Pixel Art set. Dive into the depths of the earth where each pixel forms the basis of a labyrinth cave system waiting to be explored in a world of pixel RPG and adventure games. Here you will find a huge variety of different level tiles, demonic tails and horns that stick out of the ground, lava vents, gates that lead to the most terrible corners of the dungeon, cobwebs, mushrooms, paws of dead spiders, amazing stalagmites, crystals of various shapes and structures, animated lava and water, altars and even a ferocious killer spider. Every pixel has been carefully crafted to create a seamless underground world filled with mystery and danger.
Use this pack to recreate the true spooky dungeon atmosphere. Or, prepare a massive update to an existing game project that will bring terribly exciting quests, adventure events, survival in the depths of darkness, or difficult battles with amazing underground creatures. Your players will definitely appreciate these graphics. In addition, you can easily edit the appearance of the entire set if your game project requires it. For example, you can integrate additional colors, change the background, or scale the size of the tiles. For this, a simple Adobe Photoshop editor is suitable for you.
Graphics: 2D, Pixel Art;
Format: PSD, PNG.