Detail this asset from Unity Store: Original Link
This is a paid asset, but now you can download Tetra Pack Free.
Tetra Pack v2.0
This package allows you to play the russian line-them-up falling blocks game which-must-not-be-named.
The package includes:
– The game itself
– A blocky world matching the gaming experience
– Complete source code in C#
– Nice tweening animations done with iTween
– Sound effects
– Touch input
– Mobile ready
– Unity 5 support
Online Web Demo
The source code is heavily commented allowing you to customize it at will.