Quaternius
An independently maintained library of low-poly characters, environments, buildings, props, vehicles, and reusable animations, commonly supplied as FBX, OBJ, glTF, and Blend files.
Why use it
Every model is CC0, so indie teams can modify it for prototypes or shipped games; cohesive packs and engine examples can remove substantial setup time.
Where it fits
Use art, animation, audio, levels, and narrative to make the game easy to read and its world convincing.
What to check
Free downloads often contain only part of a kit, while complete Source Kits support the creator; verify scale, collision, materials, rigs, and performance budgets after import.