Thinking back two console generations ago, I can instantly recall fond memories of lurking through the shadows and patrolling the corridors of Splinter Cell: Pandora Tomorrow's multiplayer mode, Spies vs. Mercenaries. The mode divided a small group of players into the two aforementioned teams. Both the spies and mercenaries came equipped with their own set of abilities and gear. The mercenaries were tasked with preventing the spies from completing certain objectives, and the spies needed to sneak in and out without being killed. Once the game started, a heart-pounding game of cat-and-mouse ensued, with the spies darting in and out of the shadows and the mercenaries trying to hunt them down.Of Guards and Thieves takes the core of the Spies vs. Mercenaries game mode and simplifies it into a less-complex, but just as engaging, concept. With the game's open Beta in full swing, I gave Of Guards and Thieves a download and proceeded to let it sneak off with a few hours of my evening.