The Greatest FPS Ever Coded! (play it, you know you want to)
This quote from the comments on that page sums it up.
What you have created with this game can only be described as a arcade shooting masterpiece. The controls work perfectly, the game is very responsive, each of the weapons are useful, and you get all of this while committing equestrian/brony genocide for great justice. I can't ask for much more in a game besides an actual level structure and Achievements, but for this game, I'll let that slide until the sequel (you ARE planning on following this up, right?). Kill those Ponies! has single-handedly become my new obsession overnight, and I can't thank you enough for producing this fantastic game.
Devious, treacherous, murderous, neanderthal, sub-human of the West.