Sanctum 2 drops in just ahead of The Incredible Adventures of Van Helsing for the 9 spot. If you've played Sanctum 2 or its predecessor, then you probably know why. The Sanctum games are a thrilling mix of the tower defense and FPS genres. Unlike the first one, Sanctum 2 focuses on the shooting rather than the strategy, but there's a whole lot of the latter as well. With nice art design, a wide variety of maps, many secrets, and a huge amount of character customization, Sanctum 2 is without a doubt one of the biggest sleeper hits of 2013. The leveling up system adds a whole bunch of replayability, and then there are "feats of strength" to make all the maps much more challenging. There's a lot of fun to be had here. Anybody who wants a good, relatively cheap game should take Sanctum 2 whenever they get the chance.