It has no killrot. It is like Orbiter but much harder to pilot. But it is free...
As a nice test for programming skills it is GREAT, but as a game, from an excitement point of view, I prefer the gameplay of Star Wars physics of these games... http://www.bruneras.com/fgames.htm
or Last Starfighter physics / Tron physics http://www.roguesynapse.com/games/