This is a paid asset, but now you can download 3D City Run Free.
Detail this asset from Unity Store: Original Link
3D City Run v1.1
3D City Run is a mobile, endless, 3D runner game. Avoid many obstacles and collect coins and diamonds by tilting your device and tapping the screen.
V1.1:
– Mecanim controller
– Break through walls
– PC controls
– Slide
With a very customizable environment spawn system, a wave spawner for cars, trees, pick-ups and houses, you can easily create your own 3D runner game. By scrolling textures in the opposite direction of the character, the illusion of running trough a city gets even bigger.
The project contains one character. He jumps when you touch the screen and moves using tilt controls.
Features:
– Character with animations
– Car, road, tree and pick-up models
– Tilt & PC controls
– Environment spawning
– Random car wave spawner
– Collectable coins & diamonds
– Start- Pause and Game over screen
– Fully working game scene
– Commented C# & PDF documentation
Tested on a Samsung Galaxy S3 & S4