It serves as the latest update for the original version of the game which as you may already be aware is very easy to play. This new version of the game address issues with the bugs, allows for some killstreaks, skills, balancing some levels as well as weapons to both unlock alternatives. Players are required to access details of the game from the home page though I have to mention that if you are already familiar with the first version of the game then playing this version will most definitely not be a big deal. As a matter of fact, expect to find it a lot of fun to constantly try the challenges and measure your skills.