Play Sift Heads Zero game. In this awesome prequel game, you discover the story behind Vinnie (of the Sift Heads series and Vinnie Shooting Yard series), and how he came to be such a murderous psychopath.
This action game requires you to solve puzzles. Basically, to be a born killer, you must think like a born killer. In the first mission, you seek revenge against the family cat, who by the way, killed teddy.
Tip: If you mess up a mission, you don't have to restart the whole game - unlike a lot of games. This is very important because everything is based on timing, and you don't get second chances. For example, there is one opportunity to shoot that dang cat - as it dashes from one hiding spot to the next.
