Ya, even though the Game's idea is literally the same. It was difficult to come up with the calculations where the plane and the cubes intersect, finding the edge points, then using GL.Draw on that.
It can be easy to claim its copied but I had no source code to look at. I came up myself how to transition between 2D n 3D. Anyways enough rant. Ill send you the link as soon as I setup the github. Sorry for the delay.