Old-school shoot'em up games were wildly successful and were considered to be groundbreaking titles in their day, and helped to establish the genre as one of the most popular gaming segments. SAS Zombie Assault I is a throwback video game for sure, but that's the reason why it has quickly become one of the most well-known browser and mobile games on the planet today.Essentially getting you in control of a single Special Air Services special forces soldier, you'll be assigned with dropping into a a few different maps and waging warfare against evil zombies which are hell-bent on the destruction of the human race. Most of the time, you'll need to run and gun by all of these levels all on your own, scaling down and eliminating as many zombies as humanly possible before you get towards the end checkpoint (or the zombies have you for dinner) collecting cash and other unlockables along the way.Nonetheless you also have the opportunity of having fun with your friends and family members (or about three other complete strangers) within a four person squad which makes the game so much fun and wreaking havoc in those same maps though the stakes are usually going to be raised significantly when you have a little bit of extra help, and things really start off to get a little bit crazy.At the end of the day, SAS Zombie Assault is a time waster in the very best possible means. This is the kind of game that you just start up just to kill some time, but end up blowing in hours or more with a smile on your face, never actually realizing that the time is flying by!