Game Idea: A simple tile matching game

I have been working on a game that is easy to play for beginners and pros alike, and I dubbed this as Puzzle Crash.

The concept is simple: A 4x10 grid matching 2 or more of the same color and the pieces are of 2 units, and the units swap places. There’s no rotation. A game that’s simple but tourney worthy.

Lemme know what you guys think in the comments.

On a side note it would be nice to get some help, I’m new to using Unity and c++, but this is not the first thing I’ve programmed.

 

I can't picture what you mean by "units." Can you provide a sketch or more description?