Standard Assets (for Unity 2018.4)
Unity Technologies
★★★★
Free Download

Free Platform Game Assets
Bayat Games
★★★★★
Free Download

Terrain Tools Sample Asset Pack
Unity Technologies
★★★★
Free Download

Bolt
Unity Technologies
★★★★
Free Download

Sunny Land
Ansimuz
★★★★★
Free Download

AllSky Free - 10 Sky / Skybox Set
rpgwhitelock
★★★★★
Free Download

Oculus Integration
Oculus
★★★
Free Download

3D Game Kit
Unity Technologies
★★★★
Free Download

Outdoor Ground Textures
A dog's life software
★★★★
Free Download

PUN 2 - FREE
Exit Games
★★★★
Free Download

Nature Starter Kit 2
Shapes
★★★★★
Free Download

Yughues Free Ground Materials
Nobiax / Yughues
★★★★★
Free Download

Grass Flowers Pack Free
ALP8310
★★★★★
Free Download

Conifers [BOTD]
forst
★★★★★
Free Download

Food pack - 3D Microgames Add-Ons
Unity Technologies
★★★★★
Free Download

Basic Motions FREE Pack
Kevin Iglesias
★★★★★
Free Download

Create with Code | Prototype 1 - Driving Simulation
Unity Education
★★★★
Free Download

Dream Forest Tree
IL.ranch
★★★★
Free Download

Joystick Pack
Fenerax Studios
★★★★★
Free Download

Mirror
vis2k
★★★★★
Free Download