Well, who could've thought that this "brand-new" idea in my mind is so old XD
But I guess it always comes to the execution, so it doesn't matter. I'll definitely try to use this theme some day, and it will be interesting to see your opinion about it :)
And I appreciate the advice for the pixel art, Youtube is, without a doubt, a greatest teacher of the 21 century XD I'll be working on it, thanks you!