I dunno if the concept for the gameplay of this game has been used already by some other brand or company but I think its quite unique how you made this. It has potential to be a really great game if you tweaked it or add some features that could spice up the game like a music selection or a dynamic background that changes color or something to that degree, you don't have to take it seriously though I mean its your game, you can do whatever with it. And you really have to be strategic on how you place your blocks or you could end up in a spot where you could get stuck and you have no means of going forward because of the restriction on movement. The gist of what I'm saying is that I like your game :D