Sniper Assassin 3 is the sequel to Sniper Assassin 2, and part of the Sniper Assassin series of games as part of the Flash sniper assassin subgenre. It continues where Sniper Assassin 2 left off, as the protagonist continues to kill and torture his way through many mooks as he avenges his wife's murder. This time, his crusade is ramped up in scale as he commits vandalism and more varied strategies of torture, all in the name of taking down his wife's murderers.

Spikestuff improves on their previous run of this game by 25 seconds by exploiting a quirk in Adobe Flash and design flaw in the game where clickable objects in the game can be interacted with off-screen. Thanks to this, a number of assassination targets are eliminated before they even reach the screen.

There is also an encode that removes the scope view and leaves only the reticle with the use of a modified SWF file.