sorry if this is old news , a free awesome shooter game for the pc , kickass and sophisticated graphic design , pretty hard kinda like ikaruga. you use the key arrows or awsd keys to move your ship around and use the mouse to shot and aim and you need to move the ship forward to go forward the level doesnt progress on its own like most shooters.
http://www.asahi-net.or.jp/~cs8k-cyu/windows/gr_e.html