The game isn't hard, quite repetitive but that's what makes a simple game, not having many mechanics.
The control is a bit slippery, if you jigle too much you can lose the angle.
The music is annoing and repetitive, could use something else.
The graphic is ok, kind of empty with only the background and the line.
2 Stars, the game could use a little more of effort and add more content.
From what i know Unity engine is normaly used for begginers to desing
their first games and learn. Keep trying, you get good someday !