unity free asset

• Unity Test Tools https://www.assetstore.unity3d.com/#/content/13802
• Sample Assets (beta) https://www.assetstore.unity3d.com/#/content/14474
• Unity Samples: Robot Lab https://www.assetstore.unity3d.com/#/content/7006
• Stylized foliages pack https://www.assetstore.unity3d.com/#/content/13392
• Knightly Ancient Weapon Pack https://www.assetstore.unity3d.com/#/content/3127
• Construction Site Pack https://www.assetstore.unity3d.com/#/content/3316
• Medieval Buildings Collection https://www.assetstore.unity3d.com/#/content/3592
• Snack Machines https://www.assetstore.unity3d.com/#/content/3517
• Medieval Gold https://www.assetstore.unity3d.com/#/content/14162
• Dry Stone Wall with Leafy Vines https://www.assetstore.unity3d.com/#/content/6236
• London Street Assets https://www.assetstore.unity3d.com/#/content/6720
• Reinforced Water Tower https://www.assetstore.unity3d.com/#/content/5915
• Subway Cars https://www.assetstore.unity3d.com/#/content/2609
• Unity Technologies Assets https://www.assetstore.unity3d.com/#/publisher/1
• Simple Wooden Bridge https://www.assetstore.unity3d.com/#/content/819
• Vintage Phone Booth https://www.assetstore.unity3d.com/#/content/2607
• Vintage 1940s Car https://www.assetstore.unity3d.com/#/content/2608
• Classic Car https://www.assetstore.unity3d.com/#/content/2618
• Classic American 50's Car https://www.assetstore.unity3d.com/#/content/2610
• Vending machine https://www.assetstore.unity3d.com/#/content/8392
• Record player https://www.assetstore.unity3d.com/#/content/4249
• Space Robot Kyle https://www.assetstore.unity3d.com/#/content/4696
• Create Script Dialog https://www.assetstore.unity3d.com/#/content/2668
• Bootcamp https://www.assetstore.unity3d.com/#/content/1376
• Car Tutorial https://www.assetstore.unity3d.com/#/content/10
• Unity Projects: Stealth https://www.assetstore.unity3d.com/#/content/7677
• 3rd Person Shooter https://www.assetstore.unity3d.com/#/content/9
• 3D Platform Tutorial https://www.assetstore.unity3d.com/#/content/5087
• Penelope Complete Project https://www.assetstore.unity3d.com/#/content/15
• Simple Particle Pack https://www.assetstore.unity3d.com/#/content/3045
• Angry Bots https://www.assetstore.unity3d.com/#/content/12175
• MVN Live Animation https://www.assetstore.unity3d.com/#/content/11338
• Flow Free https://www.assetstore.unity3d.com/#/content/5720
• Simple Rain FX https://www.assetstore.unity3d.com/#/content/8902
• Hard Surface Shaders Free https://www.assetstore.unity3d.com/#/content/729
• Skybox Volume 2 (Nebula) https://www.assetstore.unity3d.com/#/content/3392
• Fragmentum Free https://www.assetstore.unity3d.com/#/content/10162
• Free MatCap Shaders https://www.assetstore.unity3d.com/#/content/8221
• Nobiax / Yughues (Textures) https://www.assetstore.unity3d.com/#/publisher/4986
• Ray Larabie (Fonts) https://www.assetstore.unity3d.com/#/publisher/1780 Note: Has a TRS-80 Color Computer font, how nerdy is that?
• Prototype Textures https://www.assetstore.unity3d.com/#/content/1809
• Sky5X One https://www.assetstore.unity3d.com/#/content/6332
• 10+1 Standard Materials https://www.assetstore.unity3d.com/#/content/12349
• Construction Site Pack https://www.assetstore.unity3d.com/#/content/3316

 

PAID:

And here are some really nice paid apps which look pretty nice at a cursory glance.

• BIG Environment Pack - Nice! https://www.assetstore.unity3d.com/#/content/3277
• BIG Environment Pack Vol.3 – Wow! https://www.assetstore.unity3d.com/#/content/13198
• Medieval Environment Pack https://www.assetstore.unity3d.com/#/content/6859
• Ancient Environment https://www.assetstore.unity3d.com/#/content/8746
• Autumnal Nature Pack https://www.assetstore.unity3d.com/#/content/3649
• Nature Pack https://www.assetstore.unity3d.com/#/content/1021
• Urban Construction Pack https://www.assetstore.unity3d.com/#/content/8081
• Highway Construction Set https://www.assetstore.unity3d.com/#/content/4246
• Modern Ruins https://www.assetstore.unity3d.com/#/content/4136
• RCP: Retro City Pack https://www.assetstore.unity3d.com/#/content/8707
• Medieval Construction Kit https://www.assetstore.unity3d.com/#/content/2684
• Fantasy Village 01 - Pack 2 https://www.assetstore.unity3d.com/#/content/2651
• Fantasy Megapack https://www.assetstore.unity3d.com/#/content/8355
• Top-Down Assets https://www.assetstore.unity3d.com/#/content/5806
• Urban Construction Pack https://www.assetstore.unity3d.com/#/content/8081
• HE - Abandoned Manor MegaPack v.1 https://www.assetstore.unity3d.com/#/content/8429
• Dark City https://www.assetstore.unity3d.com/#/content/9905
• Highway Construction Set https://www.assetstore.unity3d.com/#/content/4246
• Apocalyptic City 2 https://www.assetstore.unity3d.com/#/content/13532
• Retro City Pack II https://www.assetstore.unity3d.com/#/content/11109
• Playmaker https://www.assetstore.unity3d.com/#/content/368
• EasyRoads3D Pro https://www.assetstore.unity3d.com/#/content/469
• Cartoon FX Pack https://www.assetstore.unity3d.com/#/content/4010
• Scifi Level Kit https://www.assetstore.unity3d.com/#/content/12253
• WorldComposer https://www.assetstore.unity3d.com/#/content/13238
• Rocky Hills Terrain Pack https://www.assetstore.unity3d.com/#/content/3360
• 3D Cloud Models https://www.assetstore.unity3d.com/#/content/4027