Platform Game Assets Ultimate

17 Great Places to Find Free Game Art — Ninichi

Free Platform Game Assets - Free Download

200+ Free 3D low-poly dungeon game assets! : r/godot

Quaternius • Free Game Assets

Game Assets For Game Developers

ArtStation - Cartoon 2D Platformer Tileset (FREE)

Download GameMaker Asset Bundles for Free

GitHub - HotpotDesign/Game-Assets-And-Resources: Free and paid game assets and game resources for 2D games, 3D games, mobile games, Steam games, Unity games, and other games.

Preparing your assets for The Sandbox, by The Sandbox, The Sandbox

Get the Cake - sprites and background free assets addon - IndieDB