Shank is 2D beat-em-up aimed at a mature audience. It was produced by Klei Entertainment and initially was only available on consoles, but eventually it made its way onto the PC, and now, with the help of Humble Indie Bundle, on Linux platforms. There aren't many games like Shank available today. Once upon a time, titles like Final Fight and others before it used a simple recipe: fight your way through screen after screen, in 2D, defeating multiple enemies at once, and encountering a major boss from time to time.