I played it, and I was confused why arrow keys couldn't move.
Till I realized I had to drag it. Once I dragged to destroy the shapes, I lost (yes its my fault)
Now I tried again, this time dragging the mouse around, and sometimes that arrow does not like it when I move it too much. Got a score of 99. Overall a bit addicting, just add some cool music that you thought sounded epic for space invaders on youtube and fix the mouse dragging problem.
Unless it's because I used my old pc to play this. Oh well.