It's still the only one, so I think my train gun wins. I just got a photoshop program and wanted to play around with it, but I'm still not that great at it. But here's the train gun in action showing that it is good anywhere, against anything.
And, as you might have guessed, the train gun actually creates dimensional rifts where trains--which the company has going along looped tracks at all times and at various speeds--depending on the setting you use--burst full speed out your gun at your enemy.
But mainly trains. Olde Timey ones too, but I'll photoshop that another time.
And as much as I searched, I could not find a good picture of 12 year old boys to show you what the train gun could do to them, but you can use your imagination.