What I have

1320HD: The start of 1320Legends in Unity3D. Didn't go well, the UI plugin just sucks
American Drag: A Unity3D Project I found on GitHub, it sucks, but clean code and with the right modifications could be great. Made for Android
Car Racing Multiplayer: Unity3D Project, have never actually messed with it.
City Builder: Just a Unity3D Asset to build your own city, could use to make race tracks like Racing Rivals easily
City Racers: A Demo Project on Unity3D for building a city based racing arcade game
Corgi Engine: A 2D 2.5D Platformer Game Asset for Unity3D
Drone Racer: As it sounds, flying drones and racing them in Unity3D
PodRacing Demo: Like a custom Star Wars Pod Racer 64 demo in Unity3D
Drag Racing Club: The only thing I've ever purchased and it sucks. Link here: https://assetstore.unity.com/packages/3d/characters/drag-racing-club-90918
Cartoon Summer Beach Pack: A custom Landscape asset for Unity3D
Simple Cartoon Dungeons: Another custom Landscape asset for Unity3D
McLarenV2: Another GitHub Project I found for Unity3D
MicroRacers: A game I started off another asset. Micro Machines style cars and racing mechanics
MiniCar: Untouched project file for MicroRacers
Mobile Drag Racer: Another GitHub Unity3D Special I've never touched
RaceRider3D: Unity3D Game I've never messed with but have. Has plugins for Google Play Services and everything
RacerX Source code: A C++ Custom game engine source
Rummy: Rummy card game for Unity3D
Street Racing Engine 4.0: A Unity3D Asset for a street racing game, haven't messed with it. Ratings for it are terrible
SuperCar: A GitHub Unity3D Game Source
UFPS 1.7.1: A FPS Asset Starter Kit
AmericanDragRacing: Another Github Unity Project
Pokemon Unity: A Unity3D GBA Style Custom Pokemon Game. Unfinished, could be easy to finish: /r/PokemonUnity for updates