Underwater Platformer Tileset 16x16 Pixel Art - Ocean, Coral Reef, Sea Caves + Treasure

A complete, seamless 16x16 pixel art underwater tileset for side-view platformers. Build sandy seabeds, layered sand and rock, coral reefs, sea caves and sunken treasure: every block joins up with its neighbours in every direction.

3,191 tiles · 16x16 px · PNG atlas + JSON autotile rules · works in any engine

The painted sea behind the screenshots is for display only and is not included: the pack is the tiles in front.

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• 5 sand layers: seagrass sand (4 textures), golden sand, coral reef (bumpy or flat top), white sand (rippled or flat top), dark wet sand
• 2 rock layers: blue reef rock and dark basalt
• Every shape in every material: 45° slopes, gentle 2-tile slopes, half blocks and ceiling slopes
• Every join: hill peaks, valleys, slopes ending at a drop, half-block steps, slopes of one material against another, cave ceilings and corners
• Sea caves: sand and reef rock background walls with soft edges and shadow
• Treasure in the rock: pearl, sea glass, amethyst, aquamarine, gold and red coral, 3 patterns each
• Sea surface: animated, see-through water
• Climbing: kelp (any height), an anchor chain with an anchor, a driftwood ladder
• Shipwreck pieces: one-way driftwood platforms, railings and gates
• Decorations: seagrass, seaweed, branch, fan, brain and tube coral, shells, pebbles, a rock, treasure chests (closed and open), bubbles, hanging seaweed

• Seamless: every tile is built from its neighbours, so any layout joins up. Tested on thousands of random levels.
• Any engine: one clean 16x16 atlas plus a JSON guide to every tile, its collision shape and the autotile rules (Unity, Godot, GameMaker, Construct, Defold...)
• Bonus setups: a ready-made TileSet with collisions and an auto-fix painting tool (Godot 4), and a tileset with terrain brushes (Tiled)
• Matches the Fleuff Platformer Tileset: same grid, outline, pixel size and collisions, so a beach level can dive straight under the sea

• The tile atlas (PNG, 16x16, plus a 4x copy) and a labelled guide to every tile
• JSON describing every tile and the autotile rules
• A Godot 4 folder (TileSet, scripts, example level) and a Tiled tileset (.tsx)
• A README with setup steps for every engine

Use in personal and commercial projects.
Edit, recolour and combine freely.
Don't resell or redistribute the tiles themselves.
Credit is appreciated but not required: Art by Fleuff Studios

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Made to go together: same style, same scale.